Eddy currents & their applications (& how to reduce them) | Electromagnetic induction | Khan Academy

Поделиться
HTML-код
  • Опубликовано: 2 янв 2025

Комментарии • 216

  • @idektega4271
    @idektega4271 3 года назад +236

    I love the way he says “but wait, there’s more “😂😂

  • @babayaga9805
    @babayaga9805 3 года назад +156

    If my teacher would have taught me this way i would have been in some electrical company and not writing codes. Awesome video 👍👍

    • @Just_Moh_it
      @Just_Moh_it 3 года назад +6

      What's wrong with writing code, though?
      People from the electrical engineering branch might the same for their programming teachers as well

    • @kalpashri0820
      @kalpashri0820 3 года назад +16

      @@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

    • @ManishSingh-jz2hx
      @ManishSingh-jz2hx 3 года назад +5

      @@kalpashri0820 Are you a fellow CBSE board student like me? If so, all the best to you buddy 👍

    • @kalpashri0820
      @kalpashri0820 3 года назад +3

      @@ManishSingh-jz2hx yes I am, thankss and all the best to you too!

    • @vishaljoy6802
      @vishaljoy6802 2 года назад +3

      @@kalpashri0820 Yo I just started 12th grade!!! You guys must have ur comp exam on monday!!! Good luck and good luck for jee too!!!

  • @shubhasrees5654
    @shubhasrees5654 3 года назад +40

    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:)

  • @beingmyself6163
    @beingmyself6163 3 года назад +74

    You nailed the intro. I always thought that the induction cooker worked on the principle of conduction!

    • @Sushmitha-rh3dt
      @Sushmitha-rh3dt 3 месяца назад

      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

  • @divyatmikam7018
    @divyatmikam7018 3 года назад +25

    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

    • @isaachester8475
      @isaachester8475 3 года назад +13

      The person who made this video is actually Mahesh Shenoy, rather than Sal Khan

    • @preetamyadav7952
      @preetamyadav7952 27 дней назад

      he is mahesh not khan

  • @atulrawat4559
    @atulrawat4559 3 года назад +8

    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..

  • @lukemaibach7657
    @lukemaibach7657 Год назад +2

    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.

  • @mahima979
    @mahima979 3 года назад +21

    Love this. He put so much effort into making the lesson interesting

  • @Medtenzin13
    @Medtenzin13 3 года назад +24

    Your teaching methods are awesome sir .
    It’s always good to know that with your videos physics is much more simpler and interesting ❤️
    Tysm

  • @ManishSingh-jz2hx
    @ManishSingh-jz2hx 3 года назад +4

    The way he explains the concept has brought tears to my eyes.

  • @BiplobHossainSorker
    @BiplobHossainSorker 2 года назад +3

    After a while I thought the video was end , but he told " but wait , there is more ! "
    The moment is awesome.

  • @sanchi7410
    @sanchi7410 3 года назад +3

    This channel increases my interest in physics everytime i watch these videos

  • @suryanshkhatri7929
    @suryanshkhatri7929 3 года назад +16

    I'm eagerly waiting for lectures of the whole chapter to be uploaded! I just love your way of teaching!

  • @k2n3l
    @k2n3l 2 года назад +2

    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"?

    • @sarthakyevankar3973
      @sarthakyevankar3973 3 месяца назад

      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

  • @HypnosisBear
    @HypnosisBear 3 года назад +4

    I like how much passionate he is while teaching. This was so awesome. Great 👍

  • @radhikayadav1145
    @radhikayadav1145 3 месяца назад +2

    RADHE RADHE❤❤❤❤❤❤❤❤❤❤❤❤KRISHNMANOHARINI KRISHNVALLABHA KRISHNSAUTA KRISHNPRIYA MADANMOHANMOHINI KRISHNKANTA KRISHNANANDPRADAYINI YASHODANANDVALLABHA DAMODARPRIYA KRISHNANGVASINI ❤❤❤❤❤❤❤❤❤❤❤❤❤❤

  • @Saadkhan-th4bz
    @Saadkhan-th4bz 2 года назад

    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

  • @olivernardbagay318
    @olivernardbagay318 3 года назад +3

    Great combination of explanation and demonstration.

  • @dishajariwala9741
    @dishajariwala9741 2 года назад +1

    Loved the explanation as alwayss

  • @jaishivshambhu1008
    @jaishivshambhu1008 Год назад

    Wow! you are giving the great knowledge in lesser time & in better way , AMAZING!

  • @michaelmurdoch
    @michaelmurdoch Месяц назад

    Thanks! Cleared this up a lot.

  • @kef5885
    @kef5885 Год назад +1

    Wonderful, amazing explanation
    Science is the real Magic
    Great Channel
    Great teachers

  • @raaniyahbabur528
    @raaniyahbabur528 2 года назад

    Excellent lectures. Highly apprehendable. So useful. Thanks

  • @harikatummalacherla-f1l
    @harikatummalacherla-f1l 3 месяца назад

    Thanks for uploading this video 😊😊 . It helped me a lot.

  • @mariavin6153
    @mariavin6153 2 года назад +3

    "to test it out, I put my hand on it" 💀

  • @tgsseveryflavourbeans4904
    @tgsseveryflavourbeans4904 Год назад +1

    Why didn't I watch it sooner!! This is awesome! Visualization of the things! Thanks Sir!💕

  • @ADI_RabeeshG-rc7mk
    @ADI_RabeeshG-rc7mk Год назад

    I am an analog design engineer. Randomly stumbled upon this video. The kind of insight is really appreciated.

  • @qualquan
    @qualquan 2 года назад +1

    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.

    • @pushpendrasinghshaktawat6241
      @pushpendrasinghshaktawat6241 2 года назад

      Agr vessel ke bottom eddy current establish ho jata hai to when we touch vessel to hme current kyo nhi lgta

  • @jatinverma6759
    @jatinverma6759 3 года назад +4

    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.

  • @euginaelza683
    @euginaelza683 2 месяца назад

    really nice and clear explanation . well done👍

  • @studentofscience860
    @studentofscience860 3 года назад +1

    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.🤞

  • @yaqubahmed2395
    @yaqubahmed2395 2 года назад

    Imagine that RUclips doesn't exist. How easily accessible these type super conceptual materials are.

  • @preethig4907
    @preethig4907 3 года назад +6

    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🙂

  • @rishabhkumar4593
    @rishabhkumar4593 3 года назад +4

    Yesterday I was searching eddy current Khan academy on youtube but there was no video.today you uploaded it.Thx

  • @moonlitSapphire3691
    @moonlitSapphire3691 2 дня назад

    Love your enthusiasm ❤️

  • @dalenassar9152
    @dalenassar9152 4 месяца назад

    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!!

  • @ur_favourite._
    @ur_favourite._ 5 месяцев назад +1

    Thank you for this

  • @manasishivakumar9203
    @manasishivakumar9203 7 месяцев назад

    I cannot explain how much i loved thiss

  • @riyarai1086
    @riyarai1086 3 года назад +2

    Thanks a lot teacher🤗

  • @_rafiaahmad
    @_rafiaahmad 3 года назад +1

    What a great teaching method 👏
    God bless you sir !

  • @AnviTiwari-jx9ce
    @AnviTiwari-jx9ce 2 месяца назад

    It was just wow! 🤩🤩🤩 literally amazing explanation and it has no match❤❤❤❤❤❤❤❤❤❤❤❤❤❤

  • @allrounder8771
    @allrounder8771 9 месяцев назад

    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 ,,,,

  • @ayoife3482
    @ayoife3482 8 месяцев назад

    This guy literally answers my questions immediately I think of them 😅

  • @MehediHasan-ov9zc
    @MehediHasan-ov9zc 2 года назад

    It's really awesome to hear you.

  • @nidhyaaravind8906
    @nidhyaaravind8906 5 месяцев назад

    Somebody give this guy an award

  • @marwansallouta2101
    @marwansallouta2101 Год назад

    Very well explained, highly appreciated. Thank you.

  • @rajibadhya8653
    @rajibadhya8653 3 года назад

    Sir ... This is awasome ... very much helpful for understanding the concept

  • @tejasvikumar2380
    @tejasvikumar2380 Год назад

    Awesome 👍👍👍👍
    Way to teach

  • @Xyzur00
    @Xyzur00 2 года назад

    Loved the explanation best lecture on eddy current

  • @hdkrishna1
    @hdkrishna1 Год назад

    Really great demonstrations and explanation sir🙏

  • @nara49veera12
    @nara49veera12 5 месяцев назад +1

    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)

  • @punitachadha1137
    @punitachadha1137 3 года назад +2

    amazing style of teaching

  • @paulboro5278
    @paulboro5278 3 года назад +5

    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. :)

  • @homemobile8362
    @homemobile8362 Год назад

    Thank u for valuble service ❤

  • @Abhi2822new
    @Abhi2822new 2 года назад

    Awesome teaching ❤️❤️

  • @kayedislam1393
    @kayedislam1393 3 года назад +2

    One of the best physics videos out there 😍

  • @patakotisrinivas1918
    @patakotisrinivas1918 2 года назад

    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...

  • @stefanopassiglia
    @stefanopassiglia 11 месяцев назад

    What an amazing video. Thank you.

  • @patrickjacobsen7805
    @patrickjacobsen7805 3 года назад

    I love your delivery of the material thank you

  • @10tine853
    @10tine853 8 месяцев назад

    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 ❤

  • @AshwiniRamreddy-g1s
    @AshwiniRamreddy-g1s 11 месяцев назад +1

    for redusing speed of train and couse increse speed both due to eddy current geting confuse

  • @feelingzhakkaas
    @feelingzhakkaas 3 года назад +13

    great explanation. what if the hand fingers are having gold rings? will the ring get hot due to eddy current?

    • @leulunited4913
      @leulunited4913 3 года назад +9

      No married man would put his hands on cooker....he lives with one

    • @aasmamazumdar2750
      @aasmamazumdar2750 3 года назад +2

      @@leulunited4913 😂😂

    • @sreejithd7517
      @sreejithd7517 3 года назад

      @@leulunited4913 🤣🤣

  • @vjadarsh9542
    @vjadarsh9542 Год назад

    Hearty thanks broo🥺🥺🤝

  • @shivampandey2545
    @shivampandey2545 3 года назад +1

    all doubts solved (thanks )

  • @messi75895
    @messi75895 Год назад

    I swear God send this guy

  • @bmilano1580
    @bmilano1580 3 года назад

    Nice! Thanks for all the examples!

  • @sadab5692
    @sadab5692 Год назад

    One of the best topic

  • @gagans7180
    @gagans7180 3 года назад

    wow that was awesome it cleared my whole concept of eddy currents

  • @sajidhajiffrey310
    @sajidhajiffrey310 Год назад

    Mehesh Shenoy 🙌🙌🙌🙌🙌

  • @tommboyaecd
    @tommboyaecd Год назад

    Awesome teaching

  • @tasty_ai
    @tasty_ai 2 года назад

    Interesting and lot of awesome information

  • @tamratchurko1077
    @tamratchurko1077 2 года назад

    What a teacher!!!!

  • @guillaume6373
    @guillaume6373 2 года назад +1

    Fantastic, love your enthusiasm and explanations :))

  • @pthiyaga
    @pthiyaga 5 месяцев назад

    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...

  • @vansh-20
    @vansh-20 3 года назад

    Never understood better :) thumbs up for you, teacher

  • @aka_ghost1897
    @aka_ghost1897 2 года назад

    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.

  • @bitno4096
    @bitno4096 3 года назад

    This is awesome, this make me convince myself so much easier.

  • @ricardomosci4098
    @ricardomosci4098 Год назад

    Brilliant teacher.

  • @mujahid1551
    @mujahid1551 2 года назад

    What a explanation 😯❤️

  • @husamuddinhajuri9996
    @husamuddinhajuri9996 Год назад +1

    In the eddy current pendulum the speed is lost as the mechanical energy is lost as heat energy due to the eddy currents

  • @pratikshah8225
    @pratikshah8225 2 года назад

    Excellent job 👍

  • @naphatfueangfoo1764
    @naphatfueangfoo1764 3 года назад +5

    Why eddy current doesn't shock you when you touch the pot

  • @RaviKumar-sw8dh
    @RaviKumar-sw8dh 3 года назад

    Really amazing concept with you

  • @riponmridha7403
    @riponmridha7403 3 года назад +2

    You are a great teacher.

  • @sanskrutibedasur8594
    @sanskrutibedasur8594 3 года назад

    Excellent sir thank you for this experiment

  • @factsss7
    @factsss7 3 года назад +2

    Amazing outstanding mind blowing fantastic

  • @ececompetitiveexampreparat5765
    @ececompetitiveexampreparat5765 2 года назад

    Best Explanation

  • @IrfanUllah-yl9nz
    @IrfanUllah-yl9nz Год назад

    Really informative

  • @CharlesDuchemin-h5r
    @CharlesDuchemin-h5r Год назад

    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 :)

  • @brynt1758
    @brynt1758 3 года назад +1

    I LOVE YOUR VIDEOS

  • @vkv392
    @vkv392 3 года назад +2

    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 .

  • @mysoulismadefor_ahlulbayt
    @mysoulismadefor_ahlulbayt 2 месяца назад

    Great video

  • @nishok3502
    @nishok3502 3 года назад +2

    mahesh bro u never fail to facinate me

  • @ahmedatifabrar7698
    @ahmedatifabrar7698 Год назад

    In the demonstration of magnetic levitation, the current in the ring moves clockwise I suppose.

  • @VedantSuryawanshi887
    @VedantSuryawanshi887 4 месяца назад +1

    9:51 will the aluminium piece also get heated up

  • @ahmedkhattab4416
    @ahmedkhattab4416 2 года назад

    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

    • @shivensaini3643
      @shivensaini3643 2 года назад

      Nah Electric potential induced is pretty low. Utensils get heated because many concentric eddy currents are induced in it at a time.

  • @dwarakadeeshkadiyala3207
    @dwarakadeeshkadiyala3207 3 года назад

    👌Fantastic mindblowing
    EXCELLENT 👍 EXPLANATION.THANK U FOR THIS 💪 REALLY GREAT

  • @yasmeenghattas9786
    @yasmeenghattas9786 3 года назад

    Great video ❤👍👍👍

  • @anbalagananbalagan2416
    @anbalagananbalagan2416 9 месяцев назад

    Sir immediately post RLC circuit sir plz because 15 th March was our board exam physics

  • @tanmayking3252
    @tanmayking3252 3 года назад

    Pretty pretty awesome 👍🔥