Why current lags voltage in inductors (logic) | Alternating currents | Physics | Khan Academy

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  • Опубликовано: 8 ноя 2024

Комментарии • 76

  • @lone_berserker
    @lone_berserker 3 года назад +53

    Highly appreciate the effort that went into animating this stuff, the excellence in teaching the concept to make it crystal clear, the humor which makes this all interesting. This channel truly deserves more attention.

  • @colorx6030
    @colorx6030 9 месяцев назад +5

    I love how the way he's explaining this is just like how you would tell a bedtime story. You can hear the fun in his voice.

  • @SAFELORE
    @SAFELORE 3 года назад +18

    Without any doubt we can say that Mahesh Shenoy is the best K12 teacher in India. Your content is way better than any RUclips channel handling the K12 content.

  • @mibrahim4245
    @mibrahim4245 3 года назад +23

    The analogy in unprecedented!! Excellent !!.. but, still I wished if you mentioned what happens regarding the back emf and magnetic field

  • @tanmayking3252
    @tanmayking3252 2 года назад +8

    The way you say "beautiful, isn't it" makes it even more beautiful ❤️❤️
    Keep going ❤️

  • @thedreamingtechie
    @thedreamingtechie 18 дней назад

    the genuine passion in your voice is very addicting.

  • @raghukancharla6004
    @raghukancharla6004 3 года назад +5

    plank analogy...mind-blowing...

  • @maximgodov7010
    @maximgodov7010 3 года назад +7

    The analogy is brilliant but it doesn't help in uderstanding why, for me at least. But it sure helps to remember that it works that way

    • @karthikchowdary4184
      @karthikchowdary4184 2 года назад +3

      dude as the current changes[increases] emf is induced in the inductor which does not allow current to immediately pick up with the voltage,it oppossses that change.When voltage is zero that would be the maximum current,it is like giving an decreasing acceleration to a body on friction less surface[since resistance is zero] and then changing the direction of acceleration[decelarating it] and at half cyle of voltage it becomes zero since it has gained that amount current in that half cycle of voltage.hope u understand .

  • @Smokingnirvana
    @Smokingnirvana 10 месяцев назад

    I just want please don't stop teaching, mygod what an explanation.

  • @grenimalidamaja
    @grenimalidamaja Месяц назад

    thank you so much for the animation and everything… awesome quality

  • @jagadishmorabad2293
    @jagadishmorabad2293 Год назад +2

    We can also use the analogy of simple pendulum where, voltage as displacement and current as velocity of pendulum
    At mean position displacement is zero anf and velocity is maximum

  • @feelingzhakkaas
    @feelingzhakkaas 3 года назад +2

    outstanding explanation with the sliding box analogy.........remarkable video ..........prize winning i would say. God bless you sir.

  • @chathurikadilhani1951
    @chathurikadilhani1951 Год назад +1

    Highly appreciate ur effort for making a clear image of these concepts ❤️

  • @harshkhulbe4935
    @harshkhulbe4935 3 года назад +1

    Waaaoooohh!!! That analogy was superb 🤯

  • @vaibhavtiwari8113
    @vaibhavtiwari8113 Год назад

    U r just 💫 ...
    Your explanation ,your animation everything blows up my mind...
    I've just opened your video because I'm stuck on the sin function of the derivation... But suddenly the lecture ended ... Everything was just *frictionless* ❤‍🔥

  • @tenzindorjee7689
    @tenzindorjee7689 3 года назад +2

    Beautifully explained 👍🏻 loving physics ❤️

  • @rajkasaudhan8293
    @rajkasaudhan8293 Год назад

    God of teaching , not met such teacher in my entire life ❤️

  • @aahilrafiq4850
    @aahilrafiq4850 2 года назад

    Amazing Analogy , now I clearly Get it ,Beautifully Explained!!!

  • @manuellopezanido
    @manuellopezanido Год назад

    I really like this explination, I was looking for somenthig like this. Thank you very much

  • @jacobvandijk6525
    @jacobvandijk6525 7 месяцев назад

    @ 6:52 For me, the intuition is in the equation V = L . di/dt. It simply says that the voltage is high(est) when the slope along the current-curve is big(gest).

  • @amirphilip2234
    @amirphilip2234 Год назад

    Excellent and amazing teaching method.

  • @YahitsI-c1g9e
    @YahitsI-c1g9e 6 месяцев назад

    Just amazing ❤

  • @Dhyaneshwar-um6ln
    @Dhyaneshwar-um6ln 10 месяцев назад +1

    With the analogy, what about when we just turn on the voltage and the current being negative maximum?How can we explain that?

  • @roobear5357
    @roobear5357 Год назад

    That’s a wonderful analogy with the plank and the box! And it may even hold at high frequencies, since it would seem, the box would be “bouncing “ up and down more than moving laterally along the plank and thus signifying very little current due to the greater inductive reactance.

  • @mohammadzakaria6707
    @mohammadzakaria6707 10 месяцев назад

    A quick reminder the voltage graph will be higher than the current graph although the video is definitely the best

  • @Pushed2InsanityYT
    @Pushed2InsanityYT 3 года назад +5

    6:52 this is lineally why i'm here, no one else in this rat race is wanting to answer this question. Thank you for explaining.

  • @muhilkumara8194
    @muhilkumara8194 3 года назад +1

    Great example sir 👌👌😙😙

  • @lucarioind2203
    @lucarioind2203 2 года назад

    my goodness you are crazy...so simple but noone even dare to think about it

  • @aalaa4146
    @aalaa4146 Год назад

    You are a great teacher !!!

  • @Z-eng0
    @Z-eng0 3 года назад

    Really great analogy, and it's not too far from the real magnetic field and emf analogy, just different naming

  • @saifullahmushtaq4628
    @saifullahmushtaq4628 2 года назад

    Very informative

  • @nikis7742
    @nikis7742 Год назад

    anology of plank was awsome i appreciate your imagination sir

  • @madscience8302
    @madscience8302 3 года назад +2

    Love u shenoy sir ❤️❤️❤️❤️❤️❤️

  • @navindraarjunaabeyesekera7864
    @navindraarjunaabeyesekera7864 2 года назад

    Good explanation

  • @kalpanakumawat6857
    @kalpanakumawat6857 Год назад

    How nicely explain 👍

  • @MATHSdotPHYSICS
    @MATHSdotPHYSICS Год назад

    Appreciated.. but how is the AC voltage maximum the moment we connect it to the circuit? Should it be 0?

  • @praveenkumarmorabad1358
    @praveenkumarmorabad1358 2 года назад

    Thank you sir 🙏

  • @vaibhavkrishnamahesh8128
    @vaibhavkrishnamahesh8128 Год назад

    great teacher no doubt, V is directly proportional to I , so v=ir, I=v/r so v> I , then phase difference of inot should be less than vnot right sir ?

  • @lekhatishbedse2275
    @lekhatishbedse2275 6 месяцев назад

    When God sends a physics teacher , this happens 👌🤩

  • @montir4510
    @montir4510 3 года назад

    Thanks sir

  • @factsss7
    @factsss7 3 года назад +1

    Thank thank thank thank thank sir ji love

  • @klevisimeri607
    @klevisimeri607 Год назад

    Lovely!

  • @REviewOFF07
    @REviewOFF07 2 года назад

    Just love it ❤!

  • @shreyakundu9331
    @shreyakundu9331 7 месяцев назад

    Is this man even real? ( Asking with teary eyes)

  • @b.srinivas9567
    @b.srinivas9567 3 года назад +1

    Waiting for capacitor video😁

  • @aniketprasad7700
    @aniketprasad7700 3 года назад

    here my analogy to this question
    notice that the current is higher when change in voltage is higher, this can be explained as follow
    since inductors hate change in current the the inductors will introduce high EMF when there is high change in voltage and this is why we toke derivative in the derivation of current

  • @omkarade746
    @omkarade746 Год назад

    What about ohm's law...

  • @shiwamkarn5215
    @shiwamkarn5215 3 года назад

    Amazing

  • @shebanisarkar3070
    @shebanisarkar3070 3 года назад +1

    I wish our shool teachers would teach this way in online 😓

  • @shilpakhatun4526
    @shilpakhatun4526 2 года назад

    Wow

  • @Jaydeep418
    @Jaydeep418 2 года назад

    Which playlist does this video belongs to? Can I get the link 🔗 of that playlist?

    • @vivekgupta3692
      @vivekgupta3692 2 года назад

      ruclips.net/p/PL2ub1_oKCn7ruZr0B-ZxHcJb7tSRS0HlO

  • @ahmednasr6171
    @ahmednasr6171 3 года назад +1

    When I open the volt the inductor resists the current but doesn't that mean it will resist the voltage also?

  • @ayuankhan4318
    @ayuankhan4318 2 года назад

    What is current at that instant when mechanical analogy starts at Vs=0 ?

    • @karthikchowdary4184
      @karthikchowdary4184 2 года назад +2

      bro he related velocity with current so if velocity of the anology is zero then current would be zero but still has voltage

  • @tsew1ng
    @tsew1ng Год назад

    Salut.

  • @rajeshchandrasekharan3436
    @rajeshchandrasekharan3436 2 года назад

    Why the quantity of current shown more than voltage in the Graf? Normally valu of current less than voltage, please explain

    • @pranilshoots9523
      @pranilshoots9523 Год назад

      The magnitude of the voltage and current are taken are arbitrary (random). Its just to show the difference in voltage and current. Technically we are not comparing the magnitude of the voltage and current5 but just the phase.

  • @abhishekshinde8913
    @abhishekshinde8913 3 года назад

    ❤️❤️❤️❤️❤️❤️❤️

  • @HJeff
    @HJeff 3 года назад

    Is this Sal speaking with an accent?? Everything else is identical. The intonation, handwriting, etc.

  • @tarunnagarajan4888
    @tarunnagarajan4888 3 года назад

    I'm starting to become a fan of a teacher ,thats strange here at RUclips we only become fans of singing cats.

  • @vivekbaagan5778
    @vivekbaagan5778 Год назад +2

    With full hope of finding an answer to my doubt, I opened khans video, but i really get disappointed. My question is, how can an inductor attain negative maximum current as shown in the graph at the begining even before voltage starts increasing from zero value at t is zero? Nowhere in video this point is touched.

    • @simozy4475
      @simozy4475 Год назад

      were you able to find an answear, i have the same question

  • @user-nj7mf7ps4s
    @user-nj7mf7ps4s 3 года назад +2

    The analogy made is trash.

    • @pavansakthivelvijayakumar7756
      @pavansakthivelvijayakumar7756 3 года назад +2

      You need to have brains

    • @biswaranjan_4425
      @biswaranjan_4425 3 года назад +1

      If this is trash then I think you are Einstein ..isn't it?

    • @user-nj7mf7ps4s
      @user-nj7mf7ps4s 3 года назад +1

      @@biswaranjan_4425 no bruv. I am Newton.

    • @biswaranjan_4425
      @biswaranjan_4425 3 года назад +5

      Yeah pata tha.
      You gave wrong interpretation of light theory and by youtr time electromagnetism unified theory didn't exist..so yeah..it's difficult for you to understand..I get it...get some knowledge of new physics of our time.

    • @NiharikaAChirayil
      @NiharikaAChirayil 6 месяцев назад

      If this is trash your garbage