My father was also an associate professor of Physics, he used to explain me exactly like this during my school and university days... flow of current is like flow of water in pipe and voltage is like how high your tank is, Higher the height of tank/voltage faster the water/current flow. Miss you dad. 😔
Same example my dad gave me when I was in 10th. Proud of him coz of his knowledge. No teacher in school or college told me this and now directly by Sir HC Verma
i wish when i was in 11th in 2003 the youtube having such videos and we should not pay 40rs /hour for internet cafe with very slow speed . what i remember is yahoo messenger with ASL Plz (Age Sex and Locaction)
lol in my case as also my physics teacher couldn't answer but she got impressed by it. She was at least a good person without ego and acknowledged her limits. School teachers often teach 2-3 subjects, at least when I was in school, not easy to go in depth.
Beautifully explained Sir You are one of the few gems in this world who have core knowledge of Physics and can explain it to students in a very easy and effective way
Thats what makes you real practical physicist sir! You're awesome as always! 👏 From legendary book concepts of physics 1,2 to your video lectures. We all really miss you in IIT Kanpur campus! 😁 Still we love to brush our concepts from your lectures! Lots of love and respect Muba, geeky Engineer
@@Unknown-ei1eg Prof Verma already explained that the current doesn't get reduced.. Because current is nothing but flow of charge.. The movement of charge is slowed down by resistor but it doesn't block any of the charge..
I have this doubt for so many days and I asked it to my many friends but they didn't satisfied me by their answers but now I can get the satisfaction after watching this video. Sir you are really the God of concept.
@@pranjulunrecognized not continuity equation,sir has considered two different pipes ,do you get it? So a1v1=a2v2 doesnt explain anything in this context,its all about more the area of pipe,less is the resistance offered to water flow thus more is the speed this analogy has nothing to do with equation of continuity
To ask doubts to teachers & pursue your query till getting answers is the very much key for students or everyone to learn. It's an real satisfaction. This is what I think. Thank you so much sir... 🙏
Sir, Some points are missing in the explanation, i.e. The volume of charge will remain same not the speed (velocity) in one second. The velocity of the electron (water in analogy) doesn't matter, the most important thing is the volume of charge (electrons) passing through the wire cross-section per second. I just have uploaded a better explanation. ruclips.net/video/KP2UMpjsYGs/видео.html
This is an excellent question from anyone starting their electrical study. Across an ideal resistor, Voltage reduces/drops in the direction of current flow - but the current remains the same. This is the basis of KCL/KVL which you must understand to do any circuit analysis. My analogy will also use water through a pipe. The pressure on one end (voltage) forces water (charge) to flow (current) through the pipe. If you squeeze the pipe (resistance) in the middle, the pressure (and the rate of flow) will drop off at the other end. However, all the water will eventually come out (the charge). Note that the rate of flow is also reduced before the point of constriction - in fact through the whole pipe. So, resistance does affect current flow through the entire closed circuit. Without the resistor, current flow will spike to infinity and you will get a short circuit. PS. I'm an EE not a physicist...
So can we make an analogy of resistance in a wire with friction in a surface that if there's friction then our speed (in that case charge's speed) is just in control otherwise we can slip on & on due to its absence (there, current can flow on & on & may result to short circuit) ?
@@abhishekmukherjee4063 You cant take surface as a proper analogy because movement in a surface only contains one variable i.e. the speed of the particle and friction whereas the current is a 3 variable phenomenon, the proper analogy will be a flow of water in a pipe,I guess you can also consider throwing a substance below a building from different heights and different air resistances guess that will work too
I still have doubt sir, Considering your example Voltage is pressure on water Current is flow of electron/water particles per unit time ─────────── 𝗟𝗲𝘁𝘀 𝘀𝗮𝘆 𝘁𝗵𝗶𝘀 𝗶𝘀 𝗮 𝗽𝗶𝗽𝗲 𝗡𝗼𝘄 𝗜 𝗵𝗼𝗹𝗱 𝘁𝗵𝗲 𝗽𝗶𝗽𝗲 𝗶𝗻 𝗯𝗲𝘁𝘄𝗲𝗲𝗻 𝘀𝗼𝗺𝗲𝘄𝗵𝗲𝗿𝗲(𝗿𝗲𝘀𝗶𝘀𝘁𝗮𝗻𝗰𝗲) ───●────────── According to your example when the cross sectional area reduces voltage reduces but current stays the same But if we reduce the cross sectional area of pipe somewhere in between the pressure on water increases and so do the current In same case if you remember when we wash our vehicles sometimes we need more pressurised water so we use our thumb on the end as it cause resistance to the flow but due to this action the pressure on water increases (it covers the longer distance that means water particles passing through a cross sectional area increased that eventually means current increased too) So on this case resistance increased the water flow(current) and pressure (voltage) I am totally confused pls help me out
@@PM-eg7lw stay inside the pipe. Use the faucet (tap) as the resistor analogy. Think of the restriction when closing a tap. Don't confuse the issue - because with fluid dynamics there's nozzles, throttling, valves, Bernoulli effect etc. Good luck
Hello sir , It would be really really great for all physics students if you take lectures completing the two volumes of “concepts of physics “ , it would be really helpful. Sir as your books ( Two volumes ) are indispensable for all of us , your lectures will be ! Every student aspirant wether Neet or JEE has dream to learn from you , behalf of all students of India Sir do consider my humble request .. Shalem .
@@masad7315 if democracy is allowed just like flow of charge in conductor and islam provide low resistance then only physics will survive in pakistan or else maulana will destroy ur country
Having read & solved HCV books which explained the Concepts of Physics in a lucid way, I always wanted to thank the human behind it! Sir, we are blessed to have you. Thank you so much.
HC verma sir, u are a legend in physics. I learnt, many concepts from Ur book conceptual physics. I am even more delighted in hearing to ur lectures. Thank u sir. U r some of the greatest prides that we owe about Indian education .❤️🔥
In our education system, textbooks of lower standards creates confusion in view of teaching the students in a easy way ,but when at higher level we get to know the reality we are not even concerned to accept it, I thinks these types of misconception should be sorted at the first time to not crate any mess further
I first started reading Concepts of Physics in 1997. It was an amazing book, clear , concise and very useful. But your videos are at a totally different level altogether sir, unparalleled. 👍 . Great gift for students and that too for Free.
Those Who have DISLIKED This Video have no Idea that he is our Honourable Legendary physics Prof HC Verma . Almost all physics students have gone through his books .
Thank you Sir for answering such simple yet very important questions, it's rare to find answers to these fundamental questions of Physics and getting answers of these questions from an eminent Physics professor Sh. HC verma is a privilege
Verma sir, you explain this question so wonderful. Theoretically it can be said if current decrease in unit time then charge will also decrease in that time (because current is charge per unit time ) which opposes the law of conservation of charge . Hence current remains unchanged. Thanks
i=V/R , higher resistance decreases the flow(volume of electrons) of current passing through it, but any resistor can't eat electrons, so the current on both sides will remain same.
Sir, Some points are missing in the explanation, i.e. The volume of charge will remain same not the speed (velocity). The velocity of the electron doesn't matter, the most important thing is the volume of charge (electrons) passing through the wire cross-section. I just have uploaded a better explanation.
Just Wonderful it Was ! An Eye Opening Analogy ! Satisfactory Explanation As Always by our favourite Sir HC Verma ♥️ Love for Him And Hats off to the brilliant 10th Grader for his curiosity to know the basics♥️
Asked this question in my school days to teacher and she just repeated the same line again without explaining ....now i got it after a couple of years.
Here a Graduate Physicist. Current in fact descreases when it passes through a resistance. What happens it's the time in which that happen is very small. It's called relaxation time, and during that time charge is accumulated near the surface of the resistance, to make the electric field strong in the resisance (more resistance more voltage falls) and then raise the current , until the circuit reaches the stationary regime and the current is constant. The relaxation time of most conductors are incredible small: copper is 10^-17 and water: 10^-6. So usually in most circuits we neglect this effect. Note: This effect can be approximated with a capacitor in parallel with a ideal resistance. But for computing the capacitance you are going to need to solve the full Maxwell equations numerically for the general case.
@Elias Yes, it's right. Anyways I'm going to leave here a detailed example: - Suppose that you connect two resistors of equal length with resistances R1, R2, where R2 > R1 in series with a battery with voltage V. - Initially, the voltage that falls in each resistor is equal and is V/2 . This means that the current in resistor 1 is I1 = V/(2*R1) and in resistor 2 is I2 = V/(2*R2) . Current in resistance 2 is smaller than in resistance one! - So if this happen , Where does the remaining charge go? Answer: It accumulates between the two resistances. In this case the accumulated charge will be positive. This accumulate charge will create a electric field that increase the voltage that falls in R2 and decreases the voltage that falls in R1. As a consequence, I1 will fall and I2 will rise, until we get the stationary result, which is obtained via circuit theory: V1 = V /(R1 + R2) * R1 V2 = V/(R1 + R2) * R2 And the current is equal in both resistances: I1 = I2 = V/(R1 + R2)
Computational Physics Computational Physics Your explanation best fits for graduate students, for those who have learned Maxwell equations and equation of continuity. But for 10th standard students, his explanation is better.
The velocity of electrons may differ according to the value of resistor but not the quantity of charge at both the ends and no accumulation takes place inside the resistor.Even the velocity doesn't matter,only the value of current matters at both the ends.Great sir..
Truly, this is a deep question, the answer is far more deeper than the question. Resistance offered is mainly at the interface of water with another material surface in pipes, the same way current flow has a dampening effect at a metallic structure level band of energy levels. The rest of electrons are in a different part of energy transfer path, there is a term called mean free path and collision frequency which provides a net effect resistance or conductance. As long as EMF is applied or induced, currents are produced. The battery/source eventually lose out if not coninuously replenished. At that time, di/dt =/=0, or keeps dropping, current dies after a specific time.
Though I'm convinced with the logic given by sir but don't u think that there's some mistake occurred in the explanation of continuity equation....?? 🤔 Let me know if u think so...🤞
Sir I still didn't get that.. Current is simply flow of electron per unit time And resistor resist or lets say reduce those number of electron passing through a cross sectional area in a unit time That means it reduces the current How current can't be changed after passing through resistor?
@@PM-eg7lw That's what he explained in the video. Since the pipe is a medium through which water flows, its thickness will offer some resistance to the source of water, based upon the resistance the pipe has offered, the water enters inside the pipe; since the pipe is not able to store the water, the amount of water which got inside must come outside the pipe. Likewise, a resistor is not a charge storing device, therefore the current entered in the resistor must leave it with the same magnitude. Resistor offers some resistance to voltage source, the larger the resistance the smaller the current is. Take a voltage source of 1 volt and take a resistance of 1 ohm, the current is 1 ampere, so now if you vary the resistant, the current also varies. Suppose, the resistance is now 2 Ohms, then the current will be 0.5 Ampere; here, resistance was already offered by the resistor that's why current reduced.
This man is undoubtedly the flag bearer of Indian Physics fraternity. He is expert in solving the problems that appear rather obvious to us.. Really you are great sir... Salute to you and your efforts to make the subject so easy which otherwise is definitely not. That is why you get so much respect from all concerned .
Textbooks should never say resistance opposes current....it leads to misconcepts 1)...resistance consumes energy(voltage×q passed) 2)...from where does this energy come?...from collision of electrons during moving under electric field....same energy which is provided by electric field(q×E×d) is lost in collisions... 3)That's why we have V(work done by field that accelerates unit charge in its journey)=iR(energy lost in collisions in resistance)..... You think yourself....all energy provided is lost in collisions.... that is why we have a constant value of i..{i=neavd..constant current means constant velocity and constant velocity means no net work has been done...i.e energy gained=energy lost}.. 4)..resistance is basically dependent on the no. of times electron loses its energy in collisions during its journey...and has to accelerate again....this is from where R=rho L/A comes....if there was no resistance.... all electrons would never collide....no start stop journey....in a fraction, all together will reach low potential.... Giving rise to infinite current(short circuit).....similarly you can think of infinite resistance....journey of electrons never starts really...as they just keep colliding... 5)so the question was....why is current not decreased by resistance?....electron perform start(due to field)-stop(due to collision) motion through out the resistance.....if it decelerates due to collision... Then it also accelerates due to electric field....giving rise to a average value of current, which is same throughout the resistance.... More resistance means...it stops more often then it accelerates giving rise to a low value of current, but even then, it is uniform throughout the resistance.....i.e.overall value of current decreases...but not current itself........ 6)many people also have doubt that V is work done per unit charge While i×r accounts for total no of charges crossing × resistance....how can two things be equal.......one is concerned with single charge and one with all charges crossing!...... Ans is simple......i×r means neAvd×r.....i.e. it has both n and vd(drift velocity) terms in it....say n=1 and vd=2......then it signifies that wow vd is 2 of each electron.....hence good field must be acting on it....hence potential difference is good......now interchange and say n=2 and vd=1....hmm...vd is not high this time of this electron....but heyy!...it is also more crowded this time, thus vd=1 is also commendable here...there must be good potential applied. Which is true as 2×1=1×2....i.e potential is actually same in both cases....overall I conclude by saying....even though i×r includes 'no. of charge crossing term'....,but it has nothing to do with the no of charges crossing.... And only with the crowdness one unit charge feels while moving ......concluding that both potential and ir term are talking about 1 unit charge only....(one of energy gained, one of energy lost)..and hence can be equated to give us beautiful ohms law...which is nothing but a form of energy conservation!!!!... Thankyou😊 Ps: Many people are saying...one word answer is charge conservation....why?... By this explanation....cant charges lose their energy and stay in there afterwards?...i dont seem to get this explanation... resistance is not a pipe which will burst if more water is in it than volume...get me correct please...anyone?
@@jyotiparihar5454 I think that he , want to say that when current pass through that circuit amount ( value of current) differ. Waise mujhe bhi jyada samajh Nahi aaya. Good morning @jyothi
But I still can't understand from where those 600 people came who disliked this video. How can someone dislike such an informative video. You guys deserve only tiktok 🙏
I have one stupid answer..🔥 (READ IT U'll BE Satisfied) Many are saying one word answer as charge conservation.. this isn't true completely. which means what charges are going in are coming out. But current is the rate of flow of charge, the time taken by the charges to complete the journey in case of 0 resistance (no collision) will be lesser than with some resistance. I=Q/t => I inversely proportional to time. Since time taken is increased with adding up of resistance. Hence current (charge per unit time) will decrease. Problem with what sir told is: It should be even after resistance the amount of charge coming out is same as it's going in.. not the current which is time dependent.🙏🏻🙏🏻🙏🏻
Amount of water in given time i.e. Discharge(Area×velocity) is constant. Less area will give more velocity to keep discharge constant. Velocity is the distance that water travels in given time, it may change according to area of cross-section. Current(amount of charge in given time) is similar to Discharge which is constant. You're a great teacher sir, highly inspired by your teaching methods.🙏
Really sir one of the best explanation . Teaching physics is incomplete without you and I m even glad that my school physics teacher is also so gud at explaining
The current basically has no other place to go and therefore it will go through and come out of the resistance. To reduce the current within this setup, you will need to provide a different path for it to flow. Like connecting a parallel wire across the resistance, which can choose to include its own resistance. In that case, the current will split and more current will flow through the path of lesser resistance. Either way, when a current flows across a resistance, we loose voltage across it. And therefore, there is lesser voltage at the point where the current exits from the resistance in comparison to the point where it entered. This is because there was energy expended over the resistance. Now suppose you have a current flowing through a resistance. And suppose you are able to gradually increase the resistance. You will observe that the current also decreases gradually. But whatever current came out of the battery in each instance will flow in and out of the resistance without change. In other words, the battery or voltage source will always decide to push out a current whose value is calculated by first internally _feeling_ the net resistance in the circuit before the current starts to flow. This internal calculation of nature is just ohm's law. This means that if the initial resistance is very very high (imagine a rubber string instead of a copper wire), the voltage source will decide it cannot push a current through the circuit and no current will flow. If however, you now increase the voltage tremendously, there will come a point when it maybe possible to push a current even through this high resistance circuit. But the main idea to understand is - whatever current the voltage source pushes out, after internally seeing the net resistance, it will flow through the loop and complete the circuit.
Best comment. HC sir is unable to explain here. If resistance doesn't oppose the flow of current, than why bulb lights up? The tungsten wire provide great resistance and in the process gets heated up. So here electric energy is being converted into heat and light energy by resistance.
Sir you are best . I am preparing for jee mains . I bought your book and still learning . Thnks a lot sir for supporting students like me from another platform like RUclips .Thanks a lot Sir🙏
Thank you sir..I had asked this question to my teacher many times but I cannot understand what he wants to explain but finally I got it why current does not decrease...thank you so much
@@MultiSpidyman You're right, provided the resistance is increasing. Keeping the resistance constant, there wouldn't be any change in rate of flow of charge.
When resistance comes into picture, there some electric field associated with resistance which hinders path of incoming protons (or opposite flowing electrons) & hence there's some change in electric current.
see, you can't look at this concept in isolation, to understand let's take an example of simple circuit, 10 V battery, and 1-ohm resistor, according to ohms law, u will get 10 amp current from battery which will pass through 1 ohms resistor, now if u replace 1 ohms resistor with 2 ohms, according to ohms law u will get 5 amps current flowing through battery and resistor, So, a resistor offers resistance to the overall circuit, and current of that circuit is based on that overall opposing force, but once resistor and driving force (here it is the battery) agrees to common current, it flows through the entire system. now coming to, slowing down of charges, there is no point of slowing down of charges, as they already move very little, but it is the message of movement of charges which moves at almost the speed of light.
Thanked you sir for clear our doubt. I had same question and i had been tired to find the answer. Now you have solve the problem so easily thank you so much sir. Now i am bigger fan of you than before.
Make sure you understand the difference between current and charge. You may feel the difference is arbitrary now, but if you want any degree with ECE, you'll do well to notice now that it isn't.
@@kanyonful if the flow is smoth the speed of water will increase at narrower region. It will make sure same volume of water passes through every cross section whether large or small in a given time.
Yes.But sir NEVER said that speed is SAME in BOTH pipes.He has even used 'v1' for short pipes and 'v2' for larger pipe.The concept is speed whether v1 in small pipe or v2 in large pipe remains same in exit and entry. Hope it helps!!
Buy his books and spend 10% on reading and 90% on solving questions. I also did this mistake and I took so so much time just reading and analysing but it's not so deep meaning as much I thought so if you reading his books give more time in solving. 🙏😃
Greater the pipe diameter less the speed, smaller the diameter larger the speed of water. This is due to equation of continuity.plz sir correct the concept as the video is saying it opposite.
I think Here it means, smaller the diameter, greater will be the resistance because of increased collisions, and ultimately the flow will be resisted and slowed down.
@@learningwithtahira5920 But V2 will still be greater than V1 for the smaller pipe so it doesn't matter if the smaller pipe offered more chance of collisions
![mgk - I Think I’m OKAY (with YUNGBLUD) (Sad Version) [Official Music Video]](http://i.ytimg.com/vi/7AC1uqQLIg4/mqdefault.jpg)
Whoever has asked this question one thing for sure he or she doesn't study for marks but for just pure knowledge of science..this is called basics..👍
True bRo
uske hisab se mein to purest of the purest knpwledge k liye padh raha tha.......kuki ye logic mene khud heee discover krr liya tha 10th claas mein🤣
@@akshayranga2058 to kuch fayda hua #ranchordas bne ya #silencer bne ho 🤣😅
Thanks bro
@@rohinibhavsar6615 why thanks??
The Smile On Verma Sir's Face during explaination reminds me that Physics is not dangerous.
Comment of the century ❤️🔥
Highly Underrated comment
😊
Is this official channel 🙄?
@@satyaprakashray9909 it is
My father was also an associate professor of Physics, he used to explain me exactly like this during my school and university days... flow of current is like flow of water in pipe and voltage is like how high your tank is, Higher the height of tank/voltage faster the water/current flow. Miss you dad. 😔
Superb
Sorry.
Sorry.
मार गाया😅😅😂😂😂
@@Yeuiudjd321you are so insensitive, death koi hasne ki baat nahi hai
Same example my dad gave me when I was in 10th. Proud of him coz of his knowledge. No teacher in school or college told me this and now directly by Sir HC Verma
Bcs in those days they accumalated knowledge if u ask ur skl teacher they wont say they jzt accumulated degress
@@mayurpatil7333 Actually now I understand what was the class of engineers from that era when literally Mumbai had only 2-3 Engineering Colleges. :/
@@sohamkulkarni7207 tru and the best example u can take is roads then and now
Everyone gives this lol
i wish when i was in 11th in 2003 the youtube having such videos and we should not pay 40rs /hour for internet cafe with very slow speed . what i remember is yahoo messenger with ASL Plz (Age Sex and Locaction)
I have a Masters degree in Electrical Engineering and still didnt know about this. Happy to learn it from you sir.
What!?
Btw happy learning!
coz u r a very honest student.
@noname And you are salty
It's becoz crossection are infinite ann
That's so wrong on so many levels😂😂😂😂
This was a question that I asked my teacher in my 9th standard ... And she answered .. why will it change ,it will not ... And I just nodded.
Lol... Rofl.... My school physics teacher used to tell me, wait i shall tell you later , whenever i went with any mcq doubts.
haha .. yes
@@kingbing3315 baah 😂😂
lol in my case as also my physics teacher couldn't answer but she got impressed by it. She was at least a good person without ego and acknowledged her limits.
School teachers often teach 2-3 subjects, at least when I was in school, not easy to go in depth.
Y'all people even asked such questions 😂
Beautifully explained Sir
You are one of the few gems in this world who have core knowledge of Physics and can explain it to students in a very easy and effective way
No time pass, no long lectures, straight to the point, legend❤️
Other people in lockdown - tik tok vs RUclips
H c verma sir in lockdown - how the current remains same after passing through a resistance
"Tik tok vs you tube" was important to restrict aberration of students....
😂
What is tiktok vs RUclips??
Explain
@@tanayagrawal5485 Yt won!! Vishay khatam!
@@aadityapatil1354 ohh
When did it happen
Such a humble person....responds to questions, which can cause problems even if the concept is simple.....respect...😍😍😍😍
Everything is simple brother...when you understand it
Physics is easiest if you really want to learn it. 😊
Hardworking & clarity needed.
Don't underestimate the power of thekua
Are are 😂✌🏻
Yes!
my teacher insulted me infront of my class when i asked this question to her in class 8th
She didn't know , this is happen when they got job after doing ratta
9th me nhi hai electricity chapter
@@RahulKumar-qq6kd so may be in 8th , its been years now
@@genius9336 10th mai hai
@Daksh Dixit Bro there is chapter in 8 th namely 𝐂𝐡𝐞𝐦𝐢𝐜𝐚𝐥 𝐞𝐟𝐟𝐞𝐜𝐭 𝐨𝐟 𝐄𝐥𝐞𝐜𝐭𝐫𝐢𝐜 𝐂𝐮𝐫𝐫𝐞𝐧𝐭.
Wow..video is being uploaded after 2 at night and still hundreds of student came to watch it.!!!
power of knowledge
That’s true. Power of legend teaching physics
@Keshav Baviskar Jalgaon, Maharashtra
Because its HC Verma sir!!!
Saumya Singh true. I make videos too if you wanna check it out you know
H C Verma Sir's video's has no.. ads..
Shows his afforts😉❤️
yea 🔥 HC Verma sir always legend
Thats what makes you real practical physicist sir! You're awesome as always! 👏 From legendary book concepts of physics 1,2 to your video lectures. We all really miss you in IIT Kanpur campus! 😁 Still we love to brush our concepts from your lectures!
Lots of love and respect
Muba, geeky Engineer
I'm a commerce student and understood this concept completely. Such a wonderful explanation by HC Verma sir. Great fan of his teaching!!
@Mohammad Shaikh ikr i was also confused like what about equation of continuity isn't it the opposite the narrower cross section must have more speed?
I like to see his smile and happiness while answering the questions.
He seems really kind and humble.
Hmmm I never had this doubt even when I was studying engineering! This kid is going to be pretty good in the future!
It wasn't a good question because he doesn't know that current is nothing but flow of charge and resistors don't hold charge..
I actually thought about this question as a kid but never asked. Almost 5 years have passed since my graduation in engg.
@@amansinha1443 But current toh reduce hota hai resistor se pass hone ke baad... Please can you explain...
@@Unknown-ei1eg Prof Verma already explained that the current doesn't get reduced.. Because current is nothing but flow of charge.. The movement of charge is slowed down by resistor but it doesn't block any of the charge..
@@amansinha1443 😲 oh!!
Thanks Brother 🙏
I have this doubt for so many days and I asked it to my many friends but they didn't satisfied me by their answers but now I can get the satisfaction after watching this video. Sir you are really the God of concept.
I am amazed by this video.in which a person answered for the question in every students mind with very simple and clear explanation.👍
I had this same doubt when I was in class 12...And I understood the meaning of resistance during my engineering...
@Physics and Mathematics Geeks every engineering student isn't a iitian
I think he is an private college student as he don't have his basics clear because to clear IIT- JEE we have to have a good grip in all subjects
@@its_rohit_0506 You cannot say that private college students have weaker concepts.
@@its_rohit_0506 even if we do engineering from a shit college, we can get hire in Google too!
@@its_rohit_0506 rofl. Oh bhai zameen pe raho. Dont stay aloft on that cloud. You will fall down.
Resistance explained by BERNOULLIS theorem 😂
Good boi
not bernoulli's equation but continuity equation.
Bro it is continuity equation
@@umangchourasia3002 a1v1= a2v2😂
@@pranjulunrecognized not continuity equation,sir has considered two different pipes ,do you get it? So a1v1=a2v2 doesnt explain anything in this context,its all about more the area of pipe,less is the resistance offered to water flow thus more is the speed
this analogy has nothing to do with equation of continuity
My physics teacher in school also taught us like that about the similar question.❤️
To ask doubts to teachers & pursue your query till getting answers is the very much key for students or everyone to learn. It's an real satisfaction. This is what I think.
Thank you so much sir... 🙏
Your small board is very cute.....
Hc verma is cuter than his cute board
His smile is way cuter than the board 🤗
Sir, Some points are missing in the explanation, i.e. The volume of charge will remain same not the speed (velocity) in one second. The velocity of the electron (water in analogy) doesn't matter, the most important thing is the volume of charge (electrons) passing through the wire cross-section per second.
I just have uploaded a better explanation.
ruclips.net/video/KP2UMpjsYGs/видео.html
0:34
Honest question, why do people end a sentence with this "...."? Or, instead of using a comma, use this "...."?
This is an excellent question from anyone starting their electrical study.
Across an ideal resistor, Voltage reduces/drops in the direction of current flow - but the current remains the same.
This is the basis of KCL/KVL which you must understand to do any circuit analysis.
My analogy will also use water through a pipe. The pressure on one end (voltage) forces water (charge) to flow (current) through the pipe. If you squeeze the pipe (resistance) in the middle, the pressure (and the rate of flow) will drop off at the other end. However, all the water will eventually come out (the charge). Note that the rate of flow is also reduced before the point of constriction - in fact through the whole pipe. So, resistance does affect current flow through the entire closed circuit. Without the resistor, current flow will spike to infinity and you will get a short circuit.
PS. I'm an EE not a physicist...
To the point and exact answer
Whoever wondering this question,this is the exact answer
So can we make an analogy of resistance in a wire with friction in a surface that if there's friction then our speed (in that case charge's speed) is just in control otherwise we can slip on & on due to its absence (there, current can flow on & on & may result to short circuit) ?
@@abhishekmukherjee4063 You cant take surface as a proper analogy because movement in a surface only contains one variable i.e. the speed of the particle and friction whereas the current is a 3 variable phenomenon, the proper analogy will be a flow of water in a pipe,I guess you can also consider throwing a substance below a building from different heights and different air resistances guess that will work too
I still have doubt sir,
Considering your example
Voltage is pressure on water
Current is flow of electron/water particles per unit time
───────────
𝗟𝗲𝘁𝘀 𝘀𝗮𝘆 𝘁𝗵𝗶𝘀 𝗶𝘀 𝗮 𝗽𝗶𝗽𝗲
𝗡𝗼𝘄 𝗜 𝗵𝗼𝗹𝗱 𝘁𝗵𝗲 𝗽𝗶𝗽𝗲 𝗶𝗻 𝗯𝗲𝘁𝘄𝗲𝗲𝗻 𝘀𝗼𝗺𝗲𝘄𝗵𝗲𝗿𝗲(𝗿𝗲𝘀𝗶𝘀𝘁𝗮𝗻𝗰𝗲)
───●──────────
According to your example when the cross sectional area reduces voltage reduces but current stays the same
But if we reduce the cross sectional area of pipe somewhere in between the pressure on water increases and so do the current
In same case
if you remember when we wash our vehicles sometimes we need more pressurised water so we use our thumb on the end as it cause resistance to the flow but due to this action the pressure on water increases (it covers the longer distance that means water particles passing through a cross sectional area increased that eventually means current increased too)
So on this case resistance increased the water flow(current) and pressure (voltage)
I am totally confused pls help me out
@@PM-eg7lw stay inside the pipe. Use the faucet (tap) as the resistor analogy. Think of the restriction when closing a tap. Don't confuse the issue - because with fluid dynamics there's nozzles, throttling, valves, Bernoulli effect etc.
Good luck
Respected sir, you are one of the best teachers, researchers, motivators... list goes on.😊🙏
Hello sir ,
It would be really really great for all physics students if you take lectures completing the two volumes of “concepts of physics “ , it would be really helpful.
Sir as your books ( Two volumes ) are indispensable for all of us , your lectures will be !
Every student aspirant wether Neet or JEE has dream to learn from you ,
behalf of all students of India Sir do consider my humble request ..
Shalem .
HC Verma is true Physics legend.Huge respect from Pakistan 🇵🇰🇵🇰🇵🇰🇵🇰🇵🇰
India mein sare hi legend hota hai😂😂
Is HC Verma Sir's book used in Pakistan also..!!
@@ThePhysicsTrain no
@@masad7315 if democracy is allowed just like flow of charge in conductor and islam provide low resistance then only physics will survive in pakistan or else maulana will destroy ur country
We are always brothers bro.
Having read & solved HCV books which explained the Concepts of Physics in a lucid way, I always wanted to thank the human behind it! Sir, we are blessed to have you. Thank you so much.
HC verma sir, u are a legend in physics. I learnt, many concepts from Ur book conceptual physics. I am even more delighted in hearing to ur lectures. Thank u sir. U r some of the greatest prides that we owe about Indian education .❤️🔥
Comment has been taken down due to hate spread....but can be reuploaded on demand
Nice bhai.
Great hard work you did.
Preparing for what?
Are u an iit aspirant
In our education system, textbooks of lower standards creates confusion in view of teaching the students in a easy way ,but when at higher level we get to know the reality we are not even concerned to accept it, I thinks these types of misconception should be sorted at the first time to not crate any mess further
Great 👍👍
I first started reading Concepts of Physics in 1997. It was an amazing book, clear , concise and very useful. But your videos are at a totally different level altogether sir, unparalleled. 👍 . Great gift for students and that too for Free.
WORLD'S ALL STUDENT REQUIRES THE TEACHER LIKE YOU SIR , YOU'RE ARE JUST GREAT
we need teachers like hc verma sir to clear deep details necessary for research and development in india
Those Who have DISLIKED This Video have no Idea that he is our Honourable Legendary physics Prof HC Verma . Almost all physics students have gone through his books .
Yes, and for some, he gruesomely butchered the concept.
@@parthverma4534 ☠️☠️
bcz of his books ppl has disliked this video
@@parthverma4534 you are absolutely correct my friend
@@parthverma4534 could you explain please? I haven't done HC Verma yet lol
Uploading at 2 am at night, so that it’s accessible to all students in the morning.
*Amazing dedication*
*Making our Sunday mornings*
Thank you Sir for answering such simple yet very important questions, it's rare to find answers to these fundamental questions of Physics and getting answers of these questions from an eminent Physics professor Sh. HC verma is a privilege
Verma sir, you explain this question so wonderful.
Theoretically it can be said if current decrease in unit time then charge will also decrease in that time (because current is charge per unit time ) which opposes the law of conservation of charge . Hence current remains unchanged. Thanks
I just read this chapter, had the same question, and RUclips recommend this 😲
RCB QUALIFIED PLAYOFFS
YO WE TWO FANS ?
Your phone is listening u😈
They even know about your all activities 😏😏
@@vishnoiindar7338 no, i was away from my phone, maybe a coincidence...😁
Same😅
i=V/R , higher resistance decreases the flow(volume of electrons) of current passing through it, but any resistor can't eat electrons, so the current on both sides will remain same.
Better explanation then that of HCV.
But sir is explaining in Basic way .And the question is asked by 10th grade student so ..
@@shiva_iitkgp right, sir students ke level pe aa k explain krte hein, thats why he is Padamsri Prof. HV Verma
@@Baljindersingh-nb9jy Yes, And one question is for you that what is the level of research at IITK .
Means environment for research.
Sir, Some points are missing in the explanation, i.e. The volume of charge will remain same not the speed (velocity). The velocity of the electron doesn't matter, the most important thing is the volume of charge (electrons) passing through the wire cross-section.
I just have uploaded a better explanation.
Just Wonderful it Was !
An Eye Opening Analogy !
Satisfactory Explanation As Always by our favourite Sir HC Verma ♥️ Love for Him
And Hats off to the brilliant 10th Grader for his curiosity to know the basics♥️
Asked this question in my school days to teacher and she just repeated the same line again without explaining ....now i got it after a couple of years.
My Physics sir himself were your students and his speech resembles exactly like you.
His name is *Jata Shankar Mishra*
I asked this same question when I was in 9th to my school teacher ..she slapped me
@@TheHariPutraOfficially sounds like you didn't get slapped hard enough. are you kidding me?
@@ATX_Engineer I was slapped hard
@@TheHariPutraOfficially share this video to her and ask why you were slapped
@@TheHariPutraOfficially ptu lagta hai bada gyani tha .....ye chapter to class 10th mein hai 🤔🤔 app 9th mein padh liye .....sounds strange
Had you been my teacher, I would have had a different life today. Just love the way you teach.
This has to be the most exciting lecture i ever saw to be honest 😊😊
THE LEGEND OF PHYSICS.....Hatsoff
First time youtube recommendation give me the right video which I was really searching for 🙃🙃
Here a Graduate Physicist.
Current in fact descreases when it passes through a resistance.
What happens it's the time in which that happen is very small. It's called relaxation time, and during that time charge is accumulated near the surface of the resistance, to make the electric field strong in the resisance (more resistance more voltage falls) and then raise the current , until the circuit reaches the stationary regime and the current is constant.
The relaxation time of most conductors are incredible small: copper is 10^-17 and water: 10^-6. So usually in most circuits we neglect this effect.
Note: This effect can be approximated with a capacitor in parallel with a ideal resistance. But for computing the capacitance you are going to need to solve the full Maxwell equations numerically for the general case.
This is the correct explanation.. actually rate of flow of charges decreases that's current..
@Elias Yes, it's right.
Anyways I'm going to leave here a detailed example:
- Suppose that you connect two resistors of equal length with resistances R1, R2, where R2 > R1 in series with a battery with voltage V.
- Initially, the voltage that falls in each resistor is equal and is V/2 . This means that the current in resistor 1 is I1 = V/(2*R1) and in resistor 2 is I2 = V/(2*R2) . Current in resistance 2 is smaller than in resistance one!
- So if this happen , Where does the remaining charge go?
Answer: It accumulates between the two resistances. In this case the accumulated charge will be positive. This accumulate charge will create a electric field that increase the voltage that falls in R2 and decreases the voltage that falls in R1. As a consequence, I1 will fall and I2 will rise, until we get the stationary result, which is obtained via circuit theory:
V1 = V /(R1 + R2) * R1
V2 = V/(R1 + R2) * R2
And the current is equal in both resistances:
I1 = I2 = V/(R1 + R2)
@Elias flow of current is quantum phenomena and it cannot be understood by even by a graduate. In basic book we talk very ideally.
Computational Physics Computational Physics Your explanation best fits for graduate students, for those who have learned Maxwell equations and equation of continuity. But for 10th standard students, his explanation is better.
@@comprehensivemathsscience1217 Of course!
I just want to add this commentary for the ones who wants to know more.
The best teacher ever🥺oo godd the way he explains with such examples ❤️❤️
Sir has very deep understanding about everything in physics and that's why he is HC Verma❤️❤️
The velocity of electrons may differ according to the value of resistor but not the quantity of charge at both the ends and no accumulation takes place inside the resistor.Even the velocity doesn't matter,only the value of current matters at both the ends.Great sir..
Exactly..👌👌
Thanks sir
Exactly my thoughts
The dislikes are those who studies from Pradeep only and attempted JEE Advance
Very funny🤣😝
Who Pradeep?
🤣🤣🤣
@@prakeernaghosh7924 it's a book
@@mohammedameenkhan2210 I guess this joke will forever be relatable lol
Such a beautiful explanation. Even a person who does not know the basics could easily understand this explanation. Thank you sir ❤❤
Happy to see that u help every student whoever asks....i too will try to ask something someday....thnq sir😀😀
Truly, this is a deep question, the answer is far more deeper than the question. Resistance offered is mainly at the interface of water with another material surface in pipes, the same way current flow has a dampening effect at a metallic structure level band of energy levels. The rest of electrons are in a different part of energy transfer path, there is a term called mean free path and collision frequency which provides a net effect resistance or conductance.
As long as EMF is applied or induced, currents are produced. The battery/source eventually lose out if not coninuously replenished. At that time, di/dt =/=0, or keeps dropping, current dies after a specific time.
Best teacher ever ❤️ thank you so much sir 🙏💕love you
I am in btech 2nd year in electrical engineering
I got to know now
Thank you sir 👍🏻
Great professor of physics. Very convenient way of explaining
Basically he explained it using the continuity equation, div(J) + d(rho)/dt=0. Nice.
#physicsconect
@@physicsconceptandeducation1949 c
Yes you right
Though I'm convinced with the logic given by sir but don't u think that there's some mistake occurred in the explanation of continuity equation....?? 🤔
Let me know if u think so...🤞
How does that equation hold in case of a capacitor?
I have diploma & B.E. in Electrical Engineering, but I never thought that this concept could be explained with this simplicity.
Sir, you are a legend.
That's coz u aren't thought these basics & most of us don't care enough.
Can you explain in simple words to. Me what you understand?
@@pravinkamble4431 Simply put current does change when resistance is added but the changed current flows through every component of the circuit.
Sir I still didn't get that..
Current is simply flow of electron per unit time
And resistor resist or lets say reduce those number of electron passing through a cross sectional area in a unit time
That means it reduces the current
How current can't be changed after passing through resistor?
@@PM-eg7lw That's what he explained in the video. Since the pipe is a medium through which water flows, its thickness will offer some resistance to the source of water, based upon the resistance the pipe has offered, the water enters inside the pipe; since the pipe is not able to store the water, the amount of water which got inside must come outside the pipe.
Likewise, a resistor is not a charge storing device, therefore the current entered in the resistor must leave it with the same magnitude. Resistor offers some resistance to voltage source, the larger the resistance the smaller the current is. Take a voltage source of 1 volt and take a resistance of 1 ohm, the current is 1 ampere, so now if you vary the resistant, the current also varies. Suppose, the resistance is now 2 Ohms, then the current will be 0.5 Ampere; here, resistance was already offered by the resistor that's why current reduced.
Very nice explanation,we r lucky that we are having internet to reach such a genius
Everyone had these type of doubts, but only few of them gets teacher like H.C. Verma, who give much deserving respect to the curiosity.
I had the same doubt and i searched on RUclips and thankfully your video came first now my doubt got clear thanks sir 🙏
This man is undoubtedly the flag bearer of Indian Physics fraternity. He is expert in solving the problems that appear rather obvious to us.. Really you are great sir... Salute to you and your efforts to make the subject so easy which otherwise is definitely not. That is why you get so much respect from all concerned .
Textbooks should never say resistance opposes current....it leads to misconcepts
1)...resistance consumes energy(voltage×q passed)
2)...from where does this energy come?...from collision of electrons during moving under electric field....same energy which is provided by electric field(q×E×d) is lost in collisions...
3)That's why we have V(work done by field that accelerates unit charge in its journey)=iR(energy lost in collisions in resistance)..... You think yourself....all energy provided is lost in collisions.... that is why we have a constant value of i..{i=neavd..constant current means constant velocity and constant velocity means no net work has been done...i.e energy gained=energy lost}..
4)..resistance is basically dependent on the no. of times electron loses its energy in collisions during its journey...and has to accelerate again....this is from where R=rho L/A comes....if there was no resistance.... all electrons would never collide....no start stop journey....in a fraction, all together will reach low potential.... Giving rise to infinite current(short circuit).....similarly you can think of infinite resistance....journey of electrons never starts really...as they just keep colliding...
5)so the question was....why is current not decreased by resistance?....electron perform start(due to field)-stop(due to collision) motion through out the resistance.....if it decelerates due to collision... Then it also accelerates due to electric field....giving rise to a average value of current, which is same throughout the resistance.... More resistance means...it stops more often then it accelerates giving rise to a low value of current, but even then, it is uniform throughout the resistance.....i.e.overall value of current decreases...but not current itself........
6)many people also have doubt that V is work done per unit charge
While i×r accounts for total no of charges crossing × resistance....how can two things be equal.......one is concerned with single charge and one with all charges crossing!...... Ans is simple......i×r means neAvd×r.....i.e. it has both n and vd(drift velocity) terms in it....say n=1 and vd=2......then it signifies that wow vd is 2 of each electron.....hence good field must be acting on it....hence potential difference is good......now interchange and say n=2 and vd=1....hmm...vd is not high this time of this electron....but heyy!...it is also more crowded this time, thus vd=1 is also commendable here...there must be good potential applied. Which is true as 2×1=1×2....i.e potential is actually same in both cases....overall I conclude by saying....even though i×r includes 'no. of charge crossing term'....,but it has nothing to do with the no of charges crossing.... And only with the crowdness one unit charge feels while moving ......concluding that both potential and ir term are talking about 1 unit charge only....(one of energy gained, one of energy lost)..and hence can be equated to give us beautiful ohms law...which is nothing but a form of energy conservation!!!!...
Thankyou😊
Ps: Many people are saying...one word answer is charge conservation....why?...
By this explanation....cant charges lose their energy and stay in there afterwards?...i dont seem to get this explanation... resistance is not a pipe which will burst if more water is in it than volume...get me correct please...anyone?
Bhaia Hindi main samjha do .
Please 🥺
What does it mean when you say value of current decreases but not current
@@jyotiparihar5454 I think that he , want to say that when current pass through that circuit amount ( value of current) differ.
Waise mujhe bhi jyada samajh Nahi aaya.
Good morning @jyothi
Thats brilliant,thank you bro
@@imcharenbaatsongchanger7902 hi if you understand please tell me. In Hindi or in easy way.
i never questioned this thing even tho it was there in back of my mind for years...thank you sir for supporting my curiosity
Your teaching way is very simple and effective. Lots of love from nepal Sir.
But I still can't understand from where those 600 people came who disliked this video.
How can someone dislike such an informative video.
You guys deserve only tiktok 🙏
I have one stupid answer..🔥
(READ IT U'll BE Satisfied)
Many are saying one word answer as charge conservation.. this isn't true completely.
which means what charges are going in are coming out.
But current is the rate of flow of charge, the time taken by the charges to complete the journey in case of 0 resistance (no collision) will be lesser than with some resistance.
I=Q/t
=> I inversely proportional to time.
Since time taken is increased with adding up of resistance. Hence current (charge per unit time) will decrease.
Problem with what sir told is:
It should be even after resistance the amount of charge coming out is same as it's going in.. not the current which is time dependent.🙏🏻🙏🏻🙏🏻
Subscribed! Never thought like this! Perfect example!
The fact that HC Verma sir himself is explaining these questions, is a great privilege for current generation.
Amount of water in given time i.e. Discharge(Area×velocity) is constant.
Less area will give more velocity to keep discharge constant.
Velocity is the distance that water travels in given time, it may change according to area of cross-section.
Current(amount of charge in given time) is similar to Discharge which is constant.
You're a great teacher sir, highly inspired by your teaching methods.🙏
Yep, this thing I did not understand. The analogy was kinda wrong. A better one would be with cars on a sleek road.
@@intothenight69no..because after resistance the speed of cars should be more
The entire story in one simple line "It is not a tank here".
Sir....you are so humble and genuine...pranam
Really sir one of the best explanation . Teaching physics is incomplete without you and I m even glad that my school physics teacher is also so gud at explaining
The current basically has no other place to go and therefore it will go through and come out of the resistance. To reduce the current within this setup, you will need to provide a different path for it to flow. Like connecting a parallel wire across the resistance, which can choose to include its own resistance. In that case, the current will split and more current will flow through the path of lesser resistance. Either way, when a current flows across a resistance, we loose voltage across it. And therefore, there is lesser voltage at the point where the current exits from the resistance in comparison to the point where it entered. This is because there was energy expended over the resistance.
Now suppose you have a current flowing through a resistance. And suppose you are able to gradually increase the resistance. You will observe that the current also decreases gradually. But whatever current came out of the battery in each instance will flow in and out of the resistance without change. In other words, the battery or voltage source will always decide to push out a current whose value is calculated by first internally _feeling_ the net resistance in the circuit before the current starts to flow. This internal calculation of nature is just ohm's law.
This means that if the initial resistance is very very high (imagine a rubber string instead of a copper wire), the voltage source will decide it cannot push a current through the circuit and no current will flow. If however, you now increase the voltage tremendously, there will come a point when it maybe possible to push a current even through this high resistance circuit.
But the main idea to understand is - whatever current the voltage source pushes out, after internally seeing the net resistance, it will flow through the loop and complete the circuit.
Best comment. HC sir is unable to explain here. If resistance doesn't oppose the flow of current, than why bulb lights up? The tungsten wire provide great resistance and in the process gets heated up. So here electric energy is being converted into heat and light energy by resistance.
What makes you think he didn't explain it well?
very nicely answered.. thank you
@@zainbunga3002 That's joule's law of heating (maybe the name is wrong , it's been a long time since I got across the topic)
So the current doesn't change but the voltage changes?
In class10th
I also had a similar question that why current is same ,when it passes through different resistors connected in series.
Sir you are best . I am preparing for jee mains . I bought your book and still learning . Thnks a lot sir for supporting students like me from another platform like RUclips .Thanks a lot Sir🙏
Thank you sir..I had asked this question to my teacher many times but I cannot understand what he wants to explain but finally I got it why current does not decrease...thank you so much
Resistance decreases rate of flow of current (di/dt), it does not decreases current (i)
Super
Wrong, resistance decrease rate of flow of charge(i.e. current). So it does decrease current.
@@MultiSpidyman 👍
@@MultiSpidyman You're right, provided the resistance is increasing.
Keeping the resistance constant, there wouldn't be any change in rate of flow of charge.
When resistance comes into picture, there some electric field associated with resistance which hinders path of incoming protons (or opposite flowing electrons) & hence there's some change in electric current.
True the geniuses are always down to earth.... Respect to the proud of nation
This wonderful man's smile is killing.
How simply hc verma sir explained it is amazing
see, you can't look at this concept in isolation, to understand let's take an example of simple circuit, 10 V battery, and 1-ohm resistor, according to ohms law, u will get 10 amp current from battery which will pass through 1 ohms resistor, now if u replace 1 ohms resistor with 2 ohms, according to ohms law u will get 5 amps current flowing through battery and resistor,
So, a resistor offers resistance to the overall circuit, and current of that circuit is based on that overall opposing force, but once resistor and driving force (here it is the battery) agrees to common current, it flows through the entire system.
now coming to, slowing down of charges, there is no point of slowing down of charges, as they already move very little, but it is the message of movement of charges which moves at almost the speed of light.
@@GhostsOfSparta It's so funny that you're contradicting your own statement!
@@ayan8233 corrected the comment I meant to say electrons flow.
@@GhostsOfSparta alright.
Yo election velocity is so lesser than speed of light..
@@parthasarathym1882 He means that the moment you complete the circuit, electricity starts flowing in it.
RIP Bernoulli's Equation
Equation of continuity
Av=constant
Half knowledge is dangerous
Cross section is same here
@@mainulmondal6183 but two different pipes
One of larger cross section area
And other lower
Av = constant
??
@@devamarwadi3612 we cant apply bernoulli's theorem for two different pipes
What a lagend . i just joined this channel for this type of interesting question . lot of love for HC verma sir from pakistan 🇵🇰❤🇮🇳
Thanked you sir for clear our doubt.
I had same question and i had been tired to find the answer.
Now you have solve the problem so easily thank you so much sir.
Now i am bigger fan of you than before.
I wish i would have hc verma sir as my guru in physics when i was in college
very inspirational 🙏🏿🙏🏼👌🏼slay
yes very inspiring 👍🏽✌🏽
Slay indeed 🙀🙀🤝
He just taught 20 people 👴🏿☺🥶
the easiest & the most logically convincing concept explained in 3 minutes.. this the power of knowledge. when you know stuff beyond books
Opposition to the 'flow' of current...very well put. Maybe that is why definitions are to be understood very properly!
Now I get it. I was comparing charge with speed instead of matter travelling at that speed all this time.
Make sure you understand the difference between current and charge.
You may feel the difference is arbitrary now, but if you want any degree with ECE, you'll do well to notice now that it isn't.
i think anology is wrong pipe with narrow area speed should be larger..
ac Bernoulli principles
Exactly. Speed increases in narrow pipes SO THAT the current doesn't change, that is the amount of electrons passing through the pipe per second.
Exactly.
@@kanyonful if the flow is smoth the speed of water will increase at narrower region. It will make sure same volume of water passes through every cross section whether large or small in a given time.
Yes.But sir NEVER said that speed is SAME in BOTH pipes.He has even used 'v1' for short pipes and 'v2' for larger pipe.The concept is speed whether v1 in small pipe or v2 in large pipe remains same in exit and entry.
Hope it helps!!
@@ssssaket
But sir says that v1 is higher then v2 how it possible (here V = velocity not volume )
Sir, you are the greatest teacher in the world
I asked teachers back when I'm in 10th,12th they didn't answer that and derived by myself but sir explained it very simple
🔥🔥🔥
I am still waiting for him to explain what the kid has asked for
Buy his books and spend 10% on reading and 90% on solving questions. I also did this mistake and I took so so much time just reading and analysing but it's not so deep meaning as much I thought so if you reading his books give more time in solving. 🙏😃
bhai gaming ke alawa padhai bhi krte ho mai bhi game delete kr diya kyuki mera iss baar 10th ka exam h
@@allthingisneeded7229 Maine poori 10th gaming kari thi lmao I was very lucky
Hey there Im ur subscriber 👌❤
Greater the pipe diameter less the speed, smaller the diameter larger the speed of water. This is due to equation of continuity.plz sir correct the concept as the video is saying it opposite.
Exactly that is what i was thinking.. i think sir didn't mean to say that but somehow what is said is exactly the opposite.. no?
I think Here it means, smaller the diameter, greater will be the resistance because of increased collisions, and ultimately the flow will be resisted and slowed down.
@@learningwithtahira5920 But V2 will still be greater than V1 for the smaller pipe so it doesn't matter if the smaller pipe offered more chance of collisions
Yes thats how it should have been
I was thinking the same😅
THIS IS WHY PHYSICS IS SO INTERESTING
Its good Verma sir pay attention to these basics .
He is a true legend