sir, your work is teaching and you're doing well and I wish if the teacher like you will teach in this way ,most of our Indian students will know clearly and they'll learn many more. English language is good but it doesn't mean we totally forget our hindi language. perhaps you don't know sir cuz many students weather poor or rich who wish to achieve their goal but they failed. And the teacher like you internally motivate to study. a great salute to you sir Keep rising sir
you prolly dont give a shit but does any of you know of a way to log back into an Instagram account? I somehow forgot the account password. I appreciate any tricks you can offer me.
Sir ab asap is dunia me my nhi rahe .... Lekin aapki yaade hamesa hamesa ke liye zinda rahengi .... Apse accha insaan maine is dunia me abhi tak koi nahi dekha ...... Aah you tube par bhot saare teacher live aakar smartboard par padhate hai crash course nikalte hain ....lekin vo aapke jaisa nhi ban sakte
You are a great teacher of Physics.I really appreciate your work.May God bless you always.I feel blessed that I found your channel on youtube.Sir please upload videos for last chapters also.I shall be very thankful for your this act of kindness.Stay blessed.
I wish I Have time machine to go back into 11 class. So that I also secured best marks. But sir at that I even cross 12 class. 😢 😢 😢 😢 😢 😢 My all friends knew it from starting But none of them tell me. MORAL is all friends are selfish.
It's okay .... You can gain knowledge from this channel now By doing this ..... You will become a better student of physics no matter you have this subject not now...... It will be a better revenge from your Freinds instead of slapping them......and also marks cannot decide the potential of any person ☺☺☺
sir in sl arora its mentioned that mass of holes = mass of the electron removed but u stated that mass of hole is much greater than the electron . pls correct me if i m wrong coz its very confusing and is hole and positively charged atom same thing or is it just the vacant space created in atom due to vacancy of electrons .....?
why we not use other than pentavalent impurities to make n type materials?? Because there exists such materials which can increase the number of free electrons in semiconductor, which will make it n type material!!!! But yet we use pentavalent?????? plz ans
Metals meh bhi to yesa hi hona chayiya na kyu ki uha par bhi some electrons of valence band conduction band meh ja teh he aur hole aur electron dono ho hai to uha par current electron ki ojhe se hi kyu liya jata he??
Sir mera aur bhi ek sabal hai ki yeh jo apne electron ko hole me dalne ki baad positive charge phir develop kiye yeh conservation of charge kaise follow karta hai ?? jab pehele total charge 0 kyeu ki hole ka aur electron ka charge equal hota hai phir baad meh toh wo positive charge jyada aagaya na toh conservation principle kaise follow hua????
sir if we increase temperature no of free electron ie no of electron in conduction band will increase hence current should increase when temperature is increased
The conductors behave differently from semiconductors.For the semiconductor, the conductivity increase with the temperature because when the temperature rises it leave the valance band and goes in the conduction band,On the other hand, the conductivity of metal decrease with increase in temperature because, when the temperature increases the electrons start oscillating in their mean position and collide with free moving electron which leads to increase in resistivity.
sir aap ne kaha hai k in intrinsic semiconductors both holes and electrons will constitute current and ni as number of instrinsic charge carriers so yeh aap ne likha hai Ne=Nh =Ni .....means aaisa kyu nhi likha Ne +Nh = Ni .....i just want to say that charge carriers ka sum kyu nhi kiya?????
Ramandeep kaur :The no. of electrons in conduction band or the no. of holes in valence band is called intrinsic charge carriers. Sir has explained correct.
Sir in second limitation of intrinsic semicoductor i think the no of electrons are dominant to thermal relaxation time period so current will increase as temperature increase.( i am right sir or not )
I am a big pw fan but here cause he is not making videos anymore! ... Nevertheless I understood every single thing... Thnx a lot sir ... Luckily I found ur video at right time ! ❤️... Dhnyvaad 🙏
Q.8 A sample of germanium is doped to the extent of 10 14 donor atoms per cm3 and 7 × 10 13 acceptor atoms per cm 3. The resistivity of pure germanises at the temperature of the sample is 60 Ω cm. Find the total conduction current density due to an applied electric field of 2 V cm -1. The electron and hole mobilities are given to be 3800 cm 2 V -1 S -1 and 1800 cm2 V -1 S -1, respectively. (Ans. 52.3 mA cm -2) sir plz plzz solve this
sir, your work is teaching and you're doing well and I wish if the teacher like you will teach in this way ,most of our Indian students will know clearly and they'll learn many more. English language is good but it doesn't mean we totally forget our hindi language. perhaps you don't know sir cuz many students weather poor or rich who wish to achieve their goal but they failed. And the teacher like you internally motivate to study.
a great salute to you sir
Keep rising sir
Sir aapke subscriber hamesha hi badheinge kyonki generation badhti rahegi 12th aati rahegi u did greatest job. Ur lecture are pure .
you prolly dont give a shit but does any of you know of a way to log back into an Instagram account?
I somehow forgot the account password. I appreciate any tricks you can offer me.
Sir aapke is pink duster ka bhi bhot role hai hmlog ka concept clear krne me...bechara bhot topic pe example ka kam kiya hai...thanku duster.
Agree
Ha ha😂😂
Hehehe😂
ur students sir are very disciplined. The way u teach is very good.THANK U SIR ;-))))))))))))))))))
Sir ab asap is dunia me my nhi rahe .... Lekin aapki yaade hamesa hamesa ke liye zinda rahengi .... Apse accha insaan maine is dunia me abhi tak koi nahi dekha ......
Aah you tube par bhot saare teacher live aakar smartboard par padhate hai crash course nikalte hain ....lekin vo aapke jaisa nhi ban sakte
You are a great teacher of Physics.I really appreciate your work.May God bless you always.I feel blessed that I found your channel on youtube.Sir please upload videos for last chapters also.I shall be very thankful for your this act of kindness.Stay blessed.
sir please do some live sessions where we can ask you questions. that will be very nice. pls pls pls..
students who agree with me like this comment.
sir there is option of facebook live..a live session will be of great help
Pushkar Soni c
Thnx sir...u r the great
There is an option of RUclips Live. You can do it by that. Just tell us the time when you will go live and we will be ready
All Pakistani is agree to your decision
U are the best teacher in the world
sir would u plz upload a video on BIPRISM EXPERIMENT? i m finding it tough?
sir we can't achieve 0k temp how we take 0k for energy diagram
great explanation sir.....u r the best one.....
I wish I Have time machine to go back into 11 class.
So that I also secured best marks.
But sir at that I even cross 12 class.
😢 😢 😢 😢 😢 😢
My all friends knew it from starting
But none of them tell me.
MORAL is all friends are selfish.
I also used to scolded by my parents because of my marks as they compare me to those who were watching your videos.
At this time I wanted to slap my all friends
@@harshneetkaur4012 its ok everything is happens for a reason keep smiling and enjoy your life instead wasting of time in this kind of thoughts
@@harshneetkaur4012 how much have you scored?
It's okay .... You can gain knowledge from this channel now
By doing this ..... You will become a better student of physics no matter you have this subject not now...... It will be a better revenge from your Freinds instead of slapping them......and also marks cannot decide the potential of any person ☺☺☺
sir in sl arora its mentioned that mass of holes = mass of the electron removed but u stated that mass of hole is much greater than the electron . pls correct me if i m wrong coz its very confusing
and is hole and positively charged atom same thing or is it just the vacant space created in atom due to vacancy of electrons .....?
why we not use other than pentavalent impurities to make n type materials?? Because there exists such materials which can increase the number of free electrons in semiconductor, which will make it n type material!!!! But yet we use pentavalent?????? plz ans
Thank u so much Sir I hope u keep helping us by free videos
Without u...I cant imagine the world of PHYSICS ❣❣❣❣
Thanks sir
Hlo
@@abd2180 yeh..hello
Cooker me se channe nikaal diye aur khali cooker gas par Chadha diya
Metals meh bhi to yesa hi hona chayiya na kyu ki uha par bhi some electrons of valence band conduction band meh ja teh he aur hole aur electron dono ho hai to uha par current electron ki ojhe se hi kyu liya jata he??
Sir mera aur bhi ek sabal hai ki yeh jo apne electron ko hole me dalne ki baad positive charge phir develop kiye yeh conservation of charge kaise follow karta hai ?? jab pehele total charge 0 kyeu ki hole ka aur electron ka charge equal hota hai phir baad meh toh wo positive charge jyada aagaya na toh conservation principle kaise follow hua????
The current due to holes, how did you put +ve in the bottom atom? The atom on top of that is losing electrons. That should be +ve right?
Very good
sir if we increase temperature no of free electron ie no of electron in conduction band will increase hence current should increase when temperature is increased
The conductors behave differently from semiconductors.For the semiconductor, the conductivity increase with the temperature because when the temperature rises it leave the valance band and goes in the conduction band,On the other hand, the conductivity of metal decrease with increase in temperature because, when the temperature increases the electrons start oscillating in their mean position and collide with free moving electron which leads to increase in resistivity.
@@wanderingtowholesome amazing bro
Sir you are so much helper of poor student
Thank..... a lot.... your videos are very veryyyyyy.... helpful....
A very catchy video! i appreciate it! thank you sir.
as usual great explanation
for me greatest the greater job
sir aap ne kaha hai k in intrinsic semiconductors both holes and electrons will constitute current and ni as number of instrinsic charge carriers so yeh aap ne likha hai Ne=Nh =Ni .....means aaisa kyu nhi likha Ne +Nh = Ni .....i just want to say that charge carriers ka sum kyu nhi kiya?????
Ramandeep kaur :The no. of electrons in conduction band or the no. of holes in valence band is called intrinsic charge carriers. Sir has explained correct.
Sir, can you provide the notes, please
Sir in second limitation of intrinsic semicoductor i think the no of electrons are dominant to thermal relaxation time period so current will increase as temperature increase.( i am right sir or not )
Sir
Electron always attracts by positive charge
If in some cases hole have no positive charge then how it attract
Sir I want to join your coaching how can I do so please let me know as soon as possible thank you sir.
why you want to join the class often sir has uploaded all the video
Sir u said that when we increase the temperature current decrease in semiconductor bt how it is possible
You this process occurs in conductors
Awardable work
Thank you sir for uploading videos. it really help me...
sir why u are providing these first rather than nuclei and dual nature?could we knw reason bhnd ths?and until when our syllabus will complete?
I am a big pw fan but here cause he is not making videos anymore! ... Nevertheless I understood every single thing... Thnx a lot sir ... Luckily I found ur video at right time ! ❤️... Dhnyvaad 🙏
Q.8 A sample of germanium is doped to the extent of 10 14 donor atoms per cm3 and 7 × 10 13 acceptor atoms per cm 3. The resistivity of pure germanises at the temperature of the sample is 60 Ω cm. Find the total conduction current density due to an applied electric field of 2 V cm -1. The electron and hole mobilities are given to be 3800 cm 2 V -1 S -1 and 1800 cm2 V -1 S -1, respectively. (Ans. 52.3 mA cm -2) sir plz plzz solve this
You are more than teacher
Like
Intrinsic semiconductor Mein hole current flow karta Hai to conductor mein v to hole form ho sakta hai
yes it can be
Thank you so much
amazing outstanding fabulous
Vry nyc explanation thanks sir
Always awesome.
Very very Thank u sir.
thank u sir😊
hello, are these lectures enough for 2018-19 batches also becz 2016 is written over there?
@@manishagrawal902 concept never gets old , i am glad to have these lectures , rest its up to u .
Thankyou sir
god of physics
Complete
👍
Hi Maahi
🙏🙏
Legend
Good morning sir.
BitNic SHUT UR MOUTH. ...😆😆😆😅😅😆😅😆😂😁😀☺😂😃
🙏🏻👍🏻
sir aapke board baut ache hai
Great te6r ever
Sir problem at 38:26
@@PradeepKshetrapal sir neglect these comments
U r the big reason for increasing competition 😥😌
koi baat nhi y
🙁🙁 himaat mat hato
Why do we take temperature in kelvin but not in Celsius and Fahrenheit??? In the study of behavior of semiconductor at various temperature s.
@@asadyaseen3429 kelvin scale scientific scale thats why it is used most
@@asadyaseen3429 S I unit
Good
Only og know sir
Thanks sir
Sir...i m pakistani......bt i m ur dangerous fan
J sa superman up ha mera physic man
for me greatest the greater job