This channel is one of the reasons why I decided to pursue engineering. This channel made me and still makes me fall in love with physics. Thank you so much:)
mr. sal khan as a student who was on the verge of tears over this, you've made me understand in a way that'll stick with me for a lifetime. thank you for making these videos
I usually don't comment on educational channels but this can be exceptional case.The presentation of this lecture is beyond praise.Firstly the introduction using a real life example then theory in your words then once we are familiar you use some resources available on youtube to make it more comprehensive....simply wow...Hope you soar high..
I have been looking at videos for about 2 hours and this is 1000% better than any other video i found. I looked down at the author and was like "oh yeah, of course it's this good, its Khan". You guys never slack. Well done.
0:53 - when his hand is on the induction, it seems to not have been turned on. See the display. While when there's water there's the number that actually does show up when it's turned on. More seriously though, why do induction stoves have a warning label over them saying "do not touch"?
You seriously don't have any idea of the working😂. Do not touch is a caution to not touch for sometime after you have used it or you could possibly get your hands burned
Good but 2 points: 1) Eddy currents mean CONCENTRIC currents. Hence they require a solid and not a loop conductor . 2) To most effectively reduce them the slits must not leave a border on one side. They should go right through the border.
In your diagram at about 10:00 if the Al swings through a large constant B-field where it is at times moving through a constant field (AFTER it completely enters and BEFORE it starts to exit), the SAME amount of flux is penetrating the Al over this part of the swing...will the braking force be zero here? THANKS FOR THE CREAT VIDEO!!
Love the videos sir. Can you also please add some numericals and questions too? That would get you more views too as that would make your videos a completely free study material.
Yea cool... one other place where I have seen this.. All the Nam June paik stuff about distorting television images are all due to Eddy currents as well...
Sir ,I have a question that if a conductor is pass through constant magnet field ,motional emf is induced .what will happen if same conductor pass through fluctuating magnetic field,does it also induced moional emf Edit - your teaching skills are really helpful for students ❤
OMG Really really great! Please do more videos Mahesh Sir 😎and try to complete all the lessons of 12th std so that we could not only get good marks but gain knowledge of physics ❤️ can i expect a heart from you sir🙂
Do these maglev trains use guided pockets of these electromagnetic fields that are passed down the railings? I'm imagining it as an air hockey rink that manages to adjust airflow to purposefully guide an object of a known position (as the cabs themselves would be locked into place by the many individual currents necessary).
Some explanation of heating is not entirely correct ( 3.47) . The heating is due to hysterisis effect in Iron bottomed vessels and which is not (for example) in aluminum or copper vessel)
Very Good lecture ! Just a note on the origin of the name "Eddy currents". There is no Eddy guy who discover it. It's called Eddy in reference to "eddies" which are "localised areas of turbulence in water"(Wiki), aka whirl. In french it's called "Courants de Foucault" and there because it is Foucault that discover it. In german "Wirbelstrom", "wirbel" is translated by vortex which is quite close to the "whirl". Still, science keep be logic in naming thing when it doesn't used the name of the guy, and yes it was easy to get misleaded here. Still very good lecture :)
Suppose we put a conductor on that induction so change in magnetic field will introduce a current on that conductor, when I touch that conductor why I don't get a shock , I am very curious to know and sorry if my question is stupid
1. our hand is not a good conductor as mentioned in the video. 2 . since eddy currents form small loops of their own on the utensil even if u touch the utensil on the induction plate u will not get shocked bcos u were never a part of the circuit. p.s. i answered your question to the best of knowledge i maybe wrong please correct me if it is so!
@@user-rn7ng6zv1j i agree with the first point but according to ur 2nd point one should never get a shock because the circuit won't be complete but in reality humans do get shocks because earth is considered to be at zero potential and since current flows from high potential to low potential so when we touch a circuit we actually serve as a channel for the current just like a wire.... this is why we do earthing to prevent shocks
I love the way he says “but wait, there’s more “😂😂
I do too
6:53 😂 lmao
he sounds so excited which makes me excited too lmao
Lol
Tooo😅
If my teacher would have taught me this way i would have been in some electrical company and not writing codes. Awesome video 👍👍
What's wrong with writing code, though?
People from the electrical engineering branch might the same for their programming teachers as well
@@Just_Moh_it I think they're saying they'd have gotten so much interest in electricity and decided to pursue that as a career instead
@@kalpashri0820 Are you a fellow CBSE board student like me? If so, all the best to you buddy 👍
@@ManishSingh-jz2hx yes I am, thankss and all the best to you too!
@@kalpashri0820 Yo I just started 12th grade!!! You guys must have ur comp exam on monday!!! Good luck and good luck for jee too!!!
This channel is one of the reasons why I decided to pursue engineering. This channel made me and still makes me fall in love with physics. Thank you so much:)
You nailed the intro. I always thought that the induction cooker worked on the principle of conduction!
The name induction cooker itself indicates that induction is taking place..
But I also thought the same way and only I realised after this video
mr. sal khan as a student who was on the verge of tears over this, you've made me understand in a way that'll stick with me for a lifetime. thank you for making these videos
The person who made this video is actually Mahesh Shenoy, rather than Sal Khan
he is mahesh not khan
I usually don't comment on educational channels but this can be exceptional case.The presentation of this lecture is beyond praise.Firstly the introduction using a real life example then theory in your words then once we are familiar you use some resources available on youtube to make it more comprehensive....simply wow...Hope you soar high..
I have been looking at videos for about 2 hours and this is 1000% better than any other video i found. I looked down at the author and was like "oh yeah, of course it's this good, its Khan". You guys never slack. Well done.
Love this. He put so much effort into making the lesson interesting
Your teaching methods are awesome sir .
It’s always good to know that with your videos physics is much more simpler and interesting ❤️
Tysm
The way he explains the concept has brought tears to my eyes.
After a while I thought the video was end , but he told " but wait , there is more ! "
The moment is awesome.
0:53 - when his hand is on the induction, it seems to not have been turned on. See the display. While when there's water there's the number that actually does show up when it's turned on.
More seriously though, why do induction stoves have a warning label over them saying "do not touch"?
You seriously don't have any idea of the working😂.
Do not touch is a caution to not touch for sometime after you have used it or you could possibly get your hands burned
This channel increases my interest in physics everytime i watch these videos
I'm eagerly waiting for lectures of the whole chapter to be uploaded! I just love your way of teaching!
Same here 😁
RADHE RADHE❤❤❤❤❤❤❤❤❤❤❤❤KRISHNMANOHARINI KRISHNVALLABHA KRISHNSAUTA KRISHNPRIYA MADANMOHANMOHINI KRISHNKANTA KRISHNANANDPRADAYINI YASHODANANDVALLABHA DAMODARPRIYA KRISHNANGVASINI ❤❤❤❤❤❤❤❤❤❤❤❤❤❤
Imagine that TH-cam doesn't exist. How easily accessible these type super conceptual materials are.
I like how much passionate he is while teaching. This was so awesome. Great 👍
Brilliant. Just brilliant. I spent about 30 minutes touching up on Eddy currents cuz I couldn't quite grasp the concept. Your vid cleared everything
Great combination of explanation and demonstration.
Good but 2 points: 1) Eddy currents mean CONCENTRIC currents. Hence they require a solid and not a loop conductor .
2) To most effectively reduce them the slits must not leave a border on one side. They should go right through the border.
Agr vessel ke bottom eddy current establish ho jata hai to when we touch vessel to hme current kyo nhi lgta
Wow! you are giving the great knowledge in lesser time & in better way , AMAZING!
Thanks! Cleared this up a lot.
I am an analog design engineer. Randomly stumbled upon this video. The kind of insight is really appreciated.
Yesterday I was searching eddy current Khan academy on youtube but there was no video.today you uploaded it.Thx
Me too!
Wonderful, amazing explanation
Science is the real Magic
Great Channel
Great teachers
Excellent lectures. Highly apprehendable. So useful. Thanks
In your diagram at about 10:00 if the Al swings through a large constant B-field where it is at times moving through a constant field (AFTER it completely enters and BEFORE it starts to exit), the SAME amount of flux is penetrating the Al over this part of the swing...will the braking force be zero here?
THANKS FOR THE CREAT VIDEO!!
Love the videos sir. Can you also please add some numericals and questions too? That would get you more views too as that would make your videos a completely free study material.
great explanation. what if the hand fingers are having gold rings? will the ring get hot due to eddy current?
No married man would put his hands on cooker....he lives with one
@@leulunited4913 😂😂
@@leulunited4913 🤣🤣
Loved the explanation as alwayss
Somebody give this guy an award
Why didn't I watch it sooner!! This is awesome! Visualization of the things! Thanks Sir!💕
really nice and clear explanation . well done👍
I cannot explain how much i loved thiss
This guy literally answers my questions immediately I think of them 😅
amazing style of teaching
sir thank u so so so so much, u really made me fell in love with the science happening around us , kuddos to your brilliant animation explanation ,,,,
Thanks for uploading this video 😊😊 . It helped me a lot.
Thank you for this
What a great teaching method 👏
God bless you sir !
I watch your videos to learn how to teach :), I am have done my MSc in physics from IITG and I want to be a professor like you. :)
Loved the explanation best lecture on eddy current
Thanks a lot teacher🤗
all doubts solved (thanks )
Very well explained, highly appreciated. Thank you.
Thank you sir. Finally got it. 😊☺️ You have the ability to teach the any lesson ,in a easier way. Continue uploading more videos . Good luck.🤞
Sir ... This is awasome ... very much helpful for understanding the concept
It's really awesome to hear you.
In the eddy current pendulum the speed is lost as the mechanical energy is lost as heat energy due to the eddy currents
Hey isn't the direction of induced current wrong in the aluminium loop at 8:14.
Please correct me if I'm the one who is wrong here.
why cu and Al pan don't work on induction cooker event if they have high eddy current flowing through them....the heat energy is I^2 rt .
I have the same doubt
I swear God send this guy
Yea cool... one other place where I have seen this.. All the Nam June paik stuff about distorting television images are all due to Eddy currents as well...
It was just wow! 🤩🤩🤩 literally amazing explanation and it has no match❤❤❤❤❤❤❤❤❤❤❤❤❤❤
Thank u for valuble service ❤
I love your delivery of the material thank you
What an amazing video. Thank you.
What an excellent explanation sir!...really lucid,intuitive...loved the way u explained in such a short time, yet completely...kudos to u r efforts...
7:42
does it mean when induced Eddy current in the aluminium ring , if i touched it i'll get electric current through my body
Nah Electric potential induced is pretty low. Utensils get heated because many concentric eddy currents are induced in it at a time.
Sir ,I have a question that if a conductor is pass through constant magnet field ,motional emf is induced .what will happen if same conductor pass through fluctuating magnetic field,does it also induced moional emf
Edit - your teaching skills are really helpful for students ❤
wow that was awesome it cleared my whole concept of eddy currents
Really great demonstrations and explanation sir🙏
Never understood better :) thumbs up for you, teacher
"to test it out, I put my hand on it" 💀
Amazing outstanding mind blowing fantastic
Interesting and lot of awesome information
What a teacher!!!!
9:51 will the aluminium piece also get heated up
yes becuase of eddy current
Excellent sir thank you for this experiment
Awesome teaching ❤️❤️
Brilliant teacher.
This is awesome, this make me convince myself so much easier.
Really informative
Awesome 👍👍👍👍
Way to teach
Nice! Thanks for all the examples!
OMG Really really great! Please do more videos Mahesh Sir 😎and try to complete all the lessons of 12th std so that we could not only get good marks but gain knowledge of physics ❤️ can i expect a heart from you sir🙂
One of the best topic
Awesome teaching
Really amazing concept with you
sir if that much heat is produced by the induced current why dont we experience an electric shock when we touch the metal bowl.
potential different generated isn't enough to give us a shock
You are a great teacher.
Why eddy current doesn't shock you when you touch the pot
Hearty thanks broo🥺🥺🤝
Do these maglev trains use guided pockets of these electromagnetic fields that are passed down the railings? I'm imagining it as an air hockey rink that manages to adjust airflow to purposefully guide an object of a known position (as the cabs themselves would be locked into place by the many individual currents necessary).
One of the best physics videos out there 😍
Fantastic, love your enthusiasm and explanations :))
for redusing speed of train and couse increse speed both due to eddy current geting confuse
Some explanation of heating is not entirely correct ( 3.47) . The heating is due to hysterisis effect in Iron bottomed vessels and which is not (for example) in aluminum or copper vessel)
Very Good lecture ! Just a note on the origin of the name "Eddy currents". There is no Eddy guy who discover it. It's called Eddy in reference to "eddies" which are "localised areas of turbulence in water"(Wiki), aka whirl. In french it's called "Courants de Foucault" and there because it is Foucault that discover it. In german "Wirbelstrom", "wirbel" is translated by vortex which is quite close to the "whirl". Still, science keep be logic in naming thing when it doesn't used the name of the guy, and yes it was easy to get misleaded here. Still very good lecture :)
If induction cooker uses eddy current to heat, then why copper and aluminum utensils don't heat up in that?
What a explanation 😯❤️
Suppose we put a conductor on that induction so change in magnetic field will introduce a current on that conductor, when I touch that conductor why I don't get a shock ,
I am very curious to know and sorry if my question is stupid
1. our hand is not a good conductor as mentioned in the video.
2 . since eddy currents form small loops of their own on the utensil even if u touch the utensil on the induction plate u will not get shocked bcos u were never a part of the circuit.
p.s. i answered your question to the best of knowledge i maybe wrong please correct me if it is so!
@@user-rn7ng6zv1j i agree with the first point but according to ur 2nd point one should never get a shock because the circuit won't be complete but in reality humans do get shocks because earth is considered to be at zero potential and since current flows from high potential to low potential so when we touch a circuit we actually serve as a channel for the current just like a wire.... this is why we do earthing to prevent shocks
Did you get the answer from somewhere, if yes please tell because I also thought the same question.
Did you get the answer ?
@@prashankgupta6672 the only way i could get answer is by doing experiment bro
In the demonstration of magnetic levitation, the current in the ring moves clockwise I suppose.
Best Explanation
Excellent job 👍
Wouldn’t the current induced in the ring be going the other way? If the magnetic field is in that direction?
Thanks a lot.
mahesh bro u never fail to facinate me
I LOVE YOUR VIDEOS
Great video