@@333iv7 and your typo shows you don't belong to the present generation. Either ur an uncle inspecting ur child's phone, or someone who was just shut down from the tech by conservative parents. Sad for you bruh, I feel you so dw. Hope you got to live in the present world.
@@Vinay-Kumar04 Bro thats not a typo. I just didnt feel like saying "your reluctance to" because that guy seems like he wouldnt know big words. Im guessing you wouldnt either because you are probably about to say something about another typo that doesnt exist
I don't know how you explain things so much better than my professor. Literally an hour of lecture is wasted time...and I'm not the only one. Here, I can get twice the information in half the time. Thank you for being awesome, you've helped so many people
honestly, your videos have really saved me. i can't understand my physics professor(s) for the life of me and you somehow always manage to phrase everything - with pictures, careful explanations, etc - in a way that makes sense for me. thank you so much, i wouldn't pass my college physic finals/classes without you
6:14, I understand that induced flux density supports to keep the equilibrium so it should be inside the coil but why outside of the coil ( 6:17 )should be out of the page because the external induced magnetic flux density is into the page
No because if the magnetic field is into the page within the open surface we are considering ( the area bound by the loop), then it should be outwards on the outside because magnetic fields are circular around current-carrying wires.
I’m studying for my physics 2 final, and I learned more from the organic chemistry tutor within the past couple hours than I have from my physics professor within the past 2/3 weeks.
no longer do I sit in class with a glazed over stare for three hours twice a week. you have made these rules so easy to understand and have helped me teach other students what professors cannot. thank you so much for your time
it took me several replays to finally get this. ON the slim chance you do anything else on this, I would put the equation for Magnetic field as well as the flux that way we can see WHY the flux is either decreasing or increasing. Also, is there a rule for the directions for Bex and Bin to keep flux equal? as in, if flux decreasing and Bex is into page, then Bin is into page as well
You always save my life when it comes to chem and physics, but this term got my brain so tired that even after the video I'm still confused 🥲 Final exam tomorrow, I wish I could hope for a good grade, but at this point I pray just to pass
God bless you! Thank you for your explanation it is very helpful, just a simple question for the last example why doesn’t the magnetic field created by the induced current travel in the same direction as that other magnetic field as a result supporting the magnetic field and opposing the change ( why is the magnetic field from the induced current traveling inside next to the wire rather than outside ( same direction as the other magnetic field)?
At 10:39 shouldn't the current be pointing in the clockwise direction since induced magnetic field will have to be out of page below the loop and into page inside the loop (contrary to what is drawn)?
Doesn't the change in the magnetic flux cause a induced electric field? And wouldn't the induced electric field cause the work to be done on the electrons that create a voltage and current?
For the last problem where I is decreasing shouldn't the induced current move CW to oppose? Original B is decreasing out of the page. which produces an increasing field into the page in the loop and I moving CCW. According to Lenz law there must be.an I opposing the new field so current has to move CW and B must be the same direction as original B out of the page.
When the current is decreasing, the magnetic field is also decreasing - leading to a decrease in magnetic flux through the loop from behind the page. As a result, Lenz's law wishes to oppose this decrease in flux: the current in the loop attempts to compensate for the decreasing flux with current in the counterclockwise direction. By the right-hand rule, a counterclockwise current in the loop will try to restore the initial magnetic flux coming into the loop from behind the page. The current would move clockwise in the case that current is increasing in the wire. By increasing current in the wire, there is more flux through the loop from behind the page. In this situation, Lenz's law wants to oppose this increase in flux: the current in the loop is now clockwise so that the magnetic flux through the loop is now into the page - which is the opposite outcome of increasing flux from behind the page.
Man i am not going to take phy chem or math in my uni so im kinda sad i wont be able to get taught by you , ill be taking cs tho , so that means i needa get in a engineering uni that means in most entrances i need to give pcm , and you really help out with that , thanks !
I'm confused about the example with the straight wire. He says at 8:48 that if the flux is decreasing then the system will try to oppose that and increase the flux to bring it back, but the induced current is found to be out of the page to "support a decrease in flux". Could someone explain that? Why would we support a decrease in this scenario if the system want's to increase it so it's back to equillibrium?
At 9:42 I dont understand how you got that the induced magnetic field in the loop goes into the page at the side nearest the wire. My intuition tells me that the magnetic field nearest to the straight wire should support the straight wire's field by going out of the page closest to the wire, which is external to the wire. Is it just that the center of the loop is what needs to match the external field lines? If someone could explain that would be awesome sauce.
As the coil is moving into the uniform magnetic field, we can agree that there will be an increase in magnetic flux through the coil, i.e. an increase in delta phi. So the induced magnetic field must oppose this change by decreasing the magnetic flux through the coil, i.e. decreasing delta phi. This is why the induced magnetic field is in the opposite direction, into the page because the vector sum of both the magnetic fields will be less than before.
a question please , is there is a way to use the current but cancel the opposing flux so no power loss or drag on the prime mover like if we put a GAP on the core which have the coil ?
im so confused, like for the last example, the magnetic field is going clockwise and the decreasing current is pointed to the right. Since the flux is decreasing, you want to have the induced current go in the same direction as the original current, so the induced current should also point to the right and the induced magnetic field should be clockwise as well right??
But what about the magnetic field, outside the coil. If we take the first example, the magnetic field created by the induced emf, would go against the increase in flux inside the coil, but wouldn’t it go with the magnetic field outside the wire. Wouldn’t it increase the field outside the wire, and induce even more current. I think the magnetic field/flux, only affects the inside of the coil, but why is that? Is there a law for that?
i have a problem with calculating the induced emf in a conductor ,usually when the magnetic field is not uniforme every section has it own flux so it would have a different induced emf . I did have an idea to solve it i want to know if it is true . i take every section as a conductor with a thickness dh than calculate it resistance than i use ohm's law to calculate the induced courant that flow in this section using the emf and the resistance of that section than i do sum the induced courant in every section so i get the total induced courant than i multiply it by the resistance of the conductor so i get the emf
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you are a gift for students specially in this pandamic covid-19 days when every one is struggling.
Literally struggling
ur english shows how much u struggled. it's pandemic
@@Vinay-Kumar04 Your laziness to type out complete words also shows how much you struggled during the pandemic.
@@333iv7 and your typo shows you don't belong to the present generation. Either ur an uncle inspecting ur child's phone, or someone who was just shut down from the tech by conservative parents. Sad for you bruh, I feel you so dw. Hope you got to live in the present world.
@@Vinay-Kumar04 Bro thats not a typo. I just didnt feel like saying "your reluctance to" because that guy seems like he wouldnt know big words. Im guessing you wouldnt either because you are probably about to say something about another typo that doesnt exist
I don't know how you explain things so much better than my professor. Literally an hour of lecture is wasted time...and I'm not the only one. Here, I can get twice the information in half the time. Thank you for being awesome, you've helped so many people
Because your teacher is there just for the paycheck
For real tho
I know this video is 5 years old, but this was tremendously helpful. Thank you so much for putting these up for free.
Ong gangy ⛈️☺️
if this guy ever scream in his video, I swear to god I will have a heart attack.
Yeah he speaks in such a constant volume that if he did suddenly raise his voice it would be a surprise.
So soft a voice
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Haha
Lol
honestly, your videos have really saved me. i can't understand my physics professor(s) for the life of me and you somehow always manage to phrase everything - with pictures, careful explanations, etc - in a way that makes sense for me. thank you so much, i wouldn't pass my college physic finals/classes without you
I doubt you will see this comment, but this video really helped me clear things out for me, so thank you very much.
I saw your comment and I agree 100%
i couldn't agree more with you. This literally saved me.
Ha Ha obviously
Solid explanation. Really helped clear the air on what my professor couldn’t explain well.
I took a whole month to understand this and you made it all pretty clear within seconds
thank you
Thank you as always for doing what my professor utterly failed to do: clearly work through example problems without flying through everything
6:14, I understand that induced flux density supports to keep the equilibrium so it should be inside the coil but why outside of the coil ( 6:17 )should be out of the page because the external induced magnetic flux density is into the page
No because if the magnetic field is into the page within the open surface we are considering ( the area bound by the loop), then it should be outwards on the outside because magnetic fields are circular around current-carrying wires.
You're the greatest teacher alive so far. Your videos are godlike.
This guy explained to me in 11 minutes what my professor couldn't do for weeks
big facts
This guy's voice is so relaxing and also his videos are helpful 100%
I’m studying for my physics 2 final, and I learned more from the organic chemistry tutor within the past couple hours than I have from my physics professor within the past 2/3 weeks.
Very clear and and thorough video. Thank you.
I was so confused with this concept, but this just helped me so much!
The reason I'm making it through physics this semester, thank you!!
Hi from where are you
@@deviluntilgodsurvives4564 tf is that name you got
thank you so much!!! this was presented in such a complicated way in class, you simplified it in 10 minutes.
This guy is a legend, deserves all the praise.
no longer do I sit in class with a glazed over stare for three hours twice a week. you have made these rules so easy to understand and have helped me teach other students what professors cannot. thank you so much for your time
doing what textbooks and professors cannot. thank you
You probably get these every day, but thank you. Truly. You are doing us a humongous favor with your videos, it cannot be understated.
I like yo mama
This is very very helpful for AP physics 2. Thank you!
it took me several replays to finally get this. ON the slim chance you do anything else on this, I would put the equation for Magnetic field as well as the flux that way we can see WHY the flux is either decreasing or increasing. Also, is there a rule for the directions for Bex and Bin to keep flux equal? as in, if flux decreasing and Bex is into page, then Bin is into page as well
Come to our university please. You’re very helpful unlike many professors
Thank you so much. Tomorrow will be my 1st semester exam, and I guess you save me ❤
Great teacher! Always make the subjects easy and clear.
Thank you. You are so detailed. I have confused about how to determine direction of induced current and by this video i got it. Thank you.
You're a life saver, thank you!
One of the only videos that you cant skip even 1 second
I watched ur video when I was highschool student 3 years ago and you helped pass my courses. U are really awesome.
You always save my life when it comes to chem and physics, but this term got my brain so tired that even after the video I'm still confused 🥲 Final exam tomorrow, I wish I could hope for a good grade, but at this point I pray just to pass
Extremely helpful thank you so much!
This guy knows how to teach
Thank you, I have struggled for this information... you saved me
I don't think anyone can explain this better than you...
Ty soo much ..U helped me a lot..
I think in the last one the direction should have been anticlockwise.
This video saved my life
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I like your voice, Sir! Thank you for this lesson. I've learn a lot
So nice the world's best teacher
I'm writing an physics exam tomorrow, this helped so much thanks
Writing mine tomorrow lol
@@Aba9846 How'd it go?
@@Kryptix probably not well ☠☠
Someone like this comment in early May, will need to come back to this before the AP exam.
you are a life saviour, thank u so much
wowww! u made it make sense in 3 minutes than my professor did in a whole week! lol Thanks!
Great explanation sir! Great video!
You are a good teacher😊❤
God bless you! Thank you for your explanation it is very helpful, just a simple question for the last example why doesn’t the magnetic field created by the induced current travel in the same direction as that other magnetic field as a result supporting the magnetic field and opposing the change ( why is the magnetic field from the induced current traveling inside next to the wire rather than outside ( same direction as the other magnetic field)?
At 10:39 shouldn't the current be pointing in the clockwise direction since induced magnetic field will have to be out of page below the loop and into page inside the loop (contrary to what is drawn)?
Thanks Man that really helped
Thank you do much!!
Doesn't the change in the magnetic flux cause a induced electric field? And wouldn't the induced electric field cause the work to be done on the electrons that create a voltage and current?
For the last problem where I is decreasing shouldn't the induced current move CW to oppose? Original B is decreasing out of the page. which produces an increasing field into the page in the loop and I moving CCW. According to Lenz law there must be.an I opposing the new field so current has to move CW and B must be the same direction as original B out of the page.
My thought too. He gets that backwards Should be crosses inside w clockwise current methinks.
When the current is decreasing, the magnetic field is also decreasing - leading to a decrease in magnetic flux through the loop from behind the page. As a result, Lenz's law wishes to oppose this decrease in flux: the current in the loop attempts to compensate for the decreasing flux with current in the counterclockwise direction. By the right-hand rule, a counterclockwise current in the loop will try to restore the initial magnetic flux coming into the loop from behind the page.
The current would move clockwise in the case that current is increasing in the wire. By increasing current in the wire, there is more flux through the loop from behind the page. In this situation, Lenz's law wants to oppose this increase in flux: the current in the loop is now clockwise so that the magnetic flux through the loop is now into the page - which is the opposite outcome of increasing flux from behind the page.
thanks for yet another banger video 🔥🚒
Man i am not going to take phy chem or math in my uni so im kinda sad i wont be able to get taught by you , ill be taking cs tho , so that means i needa get in a engineering uni that means in most entrances i need to give pcm , and you really help out with that , thanks !
comments be like: our teachers are dumb asses, you are the best
its facts tho
Thanks!
Thank you so much!!
This was help full thanks alot ❤❤
Thank you for the video. It was very helpful!!
This video helps me alot, thx sir!
I'm confused about the example with the straight wire. He says at 8:48 that if the flux is decreasing then the system will try to oppose that and increase the flux to bring it back, but the induced current is found to be out of the page to "support a decrease in flux". Could someone explain that? Why would we support a decrease in this scenario if the system want's to increase it so it's back to equillibrium?
At 9:42 I dont understand how you got that the induced magnetic field in the loop goes into the page at the side nearest the wire. My intuition tells me that the magnetic field nearest to the straight wire should support the straight wire's field by going out of the page closest to the wire, which is external to the wire. Is it just that the center of the loop is what needs to match the external field lines? If someone could explain that would be awesome sauce.
Got an exam tmr, thank you Sir
Thank you once again.
Wow, this was so helpful! Thank you so much
3:40 What is the reason behind making the inside of the coil into the page? How does that oppose the existing uniform magnetic field?
As the coil is moving into the uniform magnetic field, we can agree that there will be an increase in magnetic flux through the coil, i.e. an increase in delta phi. So the induced magnetic field must oppose this change by decreasing the magnetic flux through the coil, i.e. decreasing delta phi. This is why the induced magnetic field is in the opposite direction, into the page because the vector sum of both the magnetic fields will be less than before.
a question please , is there is a way to use the current but cancel the opposing flux so no power loss or drag on the prime mover like if we put a GAP on the core which have the coil ?
Hi .... Please don't use the dark blue colour ! Your content is amazing !
THank yoiuu i had no idea what my teacher was saying
My god I love these videos
Hi
You helped a lot.THANKS
This is the first OG video that actually confused me even more. Sorry mate.
I love you so so so so so so so much man. you are saving my ass so hard right now. Medschool here I come
im so confused, like for the last example, the magnetic field is going clockwise and the decreasing current is pointed to the right. Since the flux is decreasing, you want to have the induced current go in the same direction as the original current, so the induced current should also point to the right and the induced magnetic field should be clockwise as well right??
I can't even see ur finger, but i understand it better than the explanation of my prof
You are a legend
Thank you!!
Thank you sir
You are my god
Studying 11 hours before the exam let’s see my grade
You failed?
8:40 why the flux is decreasing as the current decreasing?
Thank you so much for the awesome explanation 😍
why does the flux decrease when you decrease the current? Won't B increase, and consequently the flux?
Thank you
But what about the magnetic field, outside the coil. If we take the first example, the magnetic field created by the induced emf, would go against the increase in flux inside the coil, but wouldn’t it go with the magnetic field outside the wire. Wouldn’t it increase the field outside the wire, and induce even more current. I think the magnetic field/flux, only affects the inside of the coil, but why is that? Is there a law for that?
Thank you so muchhh! I finally understood what I didn't understand!!
i have a problem with calculating the induced emf in a conductor ,usually when the magnetic field is not uniforme every section has it own flux so it would have a different induced emf . I did have an idea to solve it i want to know if it is true . i take every section as a conductor with a thickness dh than calculate it resistance than i use ohm's law to calculate the induced courant that flow in this section
using the emf and the resistance of that section than i do sum the induced courant in every section so i get the total induced courant than i multiply it by the resistance of the conductor so i get the emf
Hats off
Nice
0.45 seconds and i swear it explained my misunderstanding :)
I still don't get it.
Always the magnetic field will be opposite to the induced emf to maintain its equillibrium
what happens if the magnetic field is constant though or if the current is constant?
You are freaking amazing
thanks a lot!!!
Why does putting a coil into a magnetic field increase B? (sorry if this is a dumb question)
thank you so much!!!
here before my last physics final woo
thank you so much
you are amazing