Magnetic dipoles & dipole moment | Moving charges & magnetism | Physics | Khan Academy

A tiny current loop act's as a tiny magnet technically called a magnetic dipole. The strength of that tiny magnet, the magnetic dipole moment m, is given by m = NIA, giving the units - Ampere meter square. The magnetic dipole moment is a vector quantity and its direction is given by the right-hand thumb rule. Magnetic dipoles are different than electric dipoles in that, there are no magnetic monopoles, only dipoles.
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Created by Mahesh Shenoy

Пікірлер: 101

  • @inquisitiverakib5844
    @inquisitiverakib58443 жыл бұрын

    this video deserves more than 100k thumbs up.

  • @Miki-bm1ux

    @Miki-bm1ux

    2 ай бұрын

    and millions more

  • @DipakPaul-hu6ry

    @DipakPaul-hu6ry

    Ай бұрын

    Also ur channel deserves some like bro

  • @palak6981
    @palak69813 жыл бұрын

    Paused the video to thank 🙇. Gratitude was overflowing .

  • @furiousarpan7473

    @furiousarpan7473

    2 жыл бұрын

    Soooo trueee😭😭

  • @RugsRabbit
    @RugsRabbit3 жыл бұрын

    thank you indian surrogate teacher for saving me again from my american classroom jai hind

  • @fighterszonetamil6538
    @fighterszonetamil65383 жыл бұрын

    When I am bored while studying I watch your videos ☺️☺️

  • @NaN_000

    @NaN_000

    4 ай бұрын

    Same

  • @4pharaoh
    @4pharaoh10 ай бұрын

    You had me at "...It feels good to say that... go ahead say it..."

  • @12.354
    @12.3543 жыл бұрын

    you are awesome And I love ur voice too

  • @ArduinoTamiza
    @ArduinoTamiza3 жыл бұрын

    thank you khan academy....you have helped me a lot

  • @bandanasuar9598
    @bandanasuar95983 жыл бұрын

    Whooo......This guy is unbelievable 😮😮😮😮😮😮

  • @sarakafka6737
    @sarakafka67372 жыл бұрын

    Bro, your videos are straight fire. this one and the one on cyclotrons are all anyone could ask for when being taught concepts. Thank you for teaching this and taking the time to explain concepts and big picture.

  • @nousin4512
    @nousin45122 жыл бұрын

    This is some phenomenal teaching.

  • @onlyneet19
    @onlyneet19 Жыл бұрын

    everyone gave the quantative definition of magnetic dipoles but u made me feel the concept. thanks a lot

  • @nandukrishna8142
    @nandukrishna814211 ай бұрын

    For those who guys wanna know why everything are not magnetic: 1. The electrons occupying the orbital must me single (else they would cancel each other out) 2. Most objects we see are made up of many domains which may or may not consist of similar atoms which have dipoles. So the domains may cancel each other out unless they are also aligned. 3. The atoms in the domains must be aligned properly

  • @charan2902
    @charan29023 жыл бұрын

    Awesome lectures and lecturers 👌

  • @freaks5973
    @freaks59733 жыл бұрын

    Love the u go through the concepts and get every detail

  • @delorean1278
    @delorean12782 жыл бұрын

    YOU ARE A GODSEND! Thank you

  • @ChauhanAshish001
    @ChauhanAshish0013 жыл бұрын

    Beautifully explained

  • @dilipmahalingam
    @dilipmahalingam3 жыл бұрын

    Thank you so much sir..

  • @bradhammond923
    @bradhammond923 Жыл бұрын

    Brilliant explainer. I'm pretty new to magnetism (for a project) and this helped out a lot. Thank you

  • @b_vishwajeet8096
    @b_vishwajeet80963 жыл бұрын

    Perfect explanation 👌😉

  • @trumpeteerTralala
    @trumpeteerTralala2 жыл бұрын

    wow! thanks! love your videos!

  • @d9e240
    @d9e240 Жыл бұрын

    My friend! Thank you so much!!!

  • @Vaishnavi__555
    @Vaishnavi__5552 жыл бұрын

    Love your explanation

  • @gautammure
    @gautammure2 жыл бұрын

    Excellent!

  • @aritrabhattacharyya2374
    @aritrabhattacharyya2374 Жыл бұрын

    What fantastic , marvellous, full of knowledge video... I'm running out of words love the way of your teaching and make us think differently ❤️❤️❤️❤️❤️❤️

  • @purnimadeymukherjee6933
    @purnimadeymukherjee69334 ай бұрын

    Awesome lecture really...all doubt cleared...

  • @johnyesudasan5029
    @johnyesudasan50293 жыл бұрын

    Well explained...

  • @THORGod_of_Thunder
    @THORGod_of_Thunder Жыл бұрын

    Great explanation 👍👍👍

  • @ronitbiswal2729
    @ronitbiswal27293 жыл бұрын

    Thanks a lot

  • @hemalatha1322
    @hemalatha13223 жыл бұрын

    Thankyou so much sir🙏😇

  • @ZahraShah-zr2ls
    @ZahraShah-zr2ls Жыл бұрын

    great, thanks

  • @susanlinus8577
    @susanlinus85772 жыл бұрын

    Superb explanation .

  • @anushkavora7815
    @anushkavora78153 ай бұрын

    sir your passion for physics envigours mine everytime I watch one of your video! THANK YOU FOR YOU EXPERTISE!

  • @xueyichee229
    @xueyichee2292 жыл бұрын

    Excellent graphics!

  • @fatenadel2611
    @fatenadel26112 жыл бұрын

    Thanks amazing

  • @user-we1gf5hc4n
    @user-we1gf5hc4n10 ай бұрын

    fantastic video!

  • @mjmeternal2696
    @mjmeternal2696 Жыл бұрын

    Thank you!!!

  • @abu_staif
    @abu_staif16 күн бұрын

    Wow. The only good video I found on this topic. And it is a REALLY good one!

  • @priyasearcher
    @priyasearcher3 жыл бұрын

    Killed it😎

  • @_Channeltowatch
    @_Channeltowatch4 ай бұрын

    very nicely explaind sir, thanks a lot.

  • @ak-vk6gl
    @ak-vk6gl Жыл бұрын

    thanks a lot it helped me to understand to concept very well

  • @Smmmile
    @Smmmile2 жыл бұрын

    Excellent Video.

  • @anitachoudhary5793
    @anitachoudhary57932 жыл бұрын

    Amazing👍👍

  • @hcross4222
    @hcross42222 жыл бұрын

    Super💯

  • @arianas7866
    @arianas78662 жыл бұрын

    THANK YOU SO MUCH

  • @shiwamkarn5215
    @shiwamkarn52153 жыл бұрын

    sir plz plz plz make video on how that expression of magnetic dipole moment came

  • @JamesKellyJohnson5
    @JamesKellyJohnson59 күн бұрын

    Wow. There is a lot packed into this video, and you present the information in a very understandable manner. Great job.

  • @moratasa9741
    @moratasa97413 жыл бұрын

    please do more videos on Lenz's and faraday's laws🙏😇

  • @tassoyattung8132
    @tassoyattung81323 жыл бұрын

    U r awesome 😃

  • @aashisinghal790
    @aashisinghal790 Жыл бұрын

    Excellent 😮😀👍👍

  • @alexalbert3026
    @alexalbert30263 жыл бұрын

    i really like when you say 'magnetic dipole' instead of 'tiny magnet', you are greater than 6G thumbs up

  • @Nobody-xp6ip
    @Nobody-xp6ip6 ай бұрын

    The reason I think everything is not magnetic is because not every molecule has free unpaired electrons that spins around and creates a magnetic field. Thank you I understood well from this great video

  • @anmoldhawan2671
    @anmoldhawan26712 жыл бұрын

    This is concept and this is real physics where it is not a strain on the mind rather simple things as a 10 year old can learn , what to explain , in physical tems what the formula is try to speak and make it visualise us ,we no long need to remember every formula is boom we can just tell the formula right . Thx man , one suggestion just elaborate more on the formula like how A incr. The B as it more no. Of mag. Field line can pass through it , more current , more B , more turns more N ,little bit more elaborate and basic is better than any Netflix show and simpler.

  • @animalkingdomv
    @animalkingdomv Жыл бұрын

    Good video

  • @dalenassar9152
    @dalenassar91524 ай бұрын

    Great video!! ...I did expect the UNITS, also, of the ELECTRIC dipole moment (or an explanation)...left things a little incomplete. THANKS MUCH!!!

  • @sangeethag6708
    @sangeethag6708 Жыл бұрын

    Super good

  • @manishjoshi2821
    @manishjoshi2821 Жыл бұрын

    Best ❤️

  • @TheRealPixx
    @TheRealPixx3 жыл бұрын

    Why cant my professors be like you......

  • @Greg_Chase
    @Greg_Chase9 ай бұрын

    If you assume the Exchange Interaction is responsible for the magnetic field around a 'current-carrying' wire (the Exchange Interaction aligns electron spins to prevent a Coulomb force build-up between electrons pulled together by the charge separation (battery or power supply) attached to the 'current-carrying' wire) Nature always seeks a lowest-energy condition, a move towards a lowest-energy equilibrium. Since aligned electron spins increases distance between the electrons, the Exchange Interaction is enabling a reduction in the Coulomb force that the bunching-up of electrons in the wire can lead to. Alignment of electron spins does 3 things: 1) the 'like' magnetic poles of adjacent electrons are now aligned parallel - 'like' poles repel; electrons keep a distance from one another due to this 2) aligned electron spins was identified in the 1920s as the source for magnetic fields 3) so a magnetic field around the wire appears due to the aligned electron spins 'Drift velocity' - the astonishingly slow and random motion of conduction-band electrons - could not produce a coherent magnetic field (consistently polarized in the same direction as is the magnetic field around a wire). 'Drift velocity' puts the lie to what we were taught in college, that 'electric current is electron flow in the wire' .

  • @onlyshorts...1m970
    @onlyshorts...1m9702 жыл бұрын

    Nothing to explain him except a single word "satisfied"

  • @tansi4924
    @tansi49242 жыл бұрын

    great :3

  • @marinanjer4293
    @marinanjer42932 жыл бұрын

    This guy should adopt my physics professor and teach him how to teach

  • @martindesposorio9805
    @martindesposorio98052 жыл бұрын

    If a current loop had a varying thickness of a circular wire (cross section is a circle through out the wire), would the area component for the magnetic dipole moment still be the same as a current loop with a non-varying thickness circular wire?

  • @sujithc.s.s.9714
    @sujithc.s.s.97149 ай бұрын

    can you pls make a video of its derivation which you said you'll do it in a future video ?

  • @drishtidia6137
    @drishtidia61372 жыл бұрын

    tqqqq

  • @thedevourerofgods1686
    @thedevourerofgods16862 жыл бұрын

    ive been beating around the bush with magnetism all day, needless to say this helped

  • @sonitomar4398
    @sonitomar43986 ай бұрын

    ❤❤❤

  • @supportWCHS
    @supportWCHS3 жыл бұрын

    see for example KZread Stern-Gerlach Experiment U2 07 03.

  • @xavierhood8165
    @xavierhood81657 ай бұрын

    Sir we also define magentic dipole moment as pole strength*distance between them which is similar to electric dipole

  • @mppgetech.8081
    @mppgetech.80812 жыл бұрын

    I think You should Join Physics Wallah. What a Amazing way of teaching!You deserve more views

  • @georgestanciu5466
    @georgestanciu5466 Жыл бұрын

    Very nice presentation: I was wondering what is in a magnetic line? how do the magnetic line form? from what?

  • @adivaaaaaa

    @adivaaaaaa

    Жыл бұрын

    Magnetic field lines are just imaginary lines to represent the magnetic field but magnetic field however is generated from the movement of charges

  • @vinay-rd3hb
    @vinay-rd3hb2 жыл бұрын

    Why area matters in magnetic moment

  • @dreamylife830
    @dreamylife83010 күн бұрын

    Hello boss am from Pakistan Have u uploaded any video about Hall effect??? If yes then share it plz

  • @himanshumishra428
    @himanshumishra4283 жыл бұрын

    When will you upload next video

  • @vaishsonwane4216
    @vaishsonwane42163 жыл бұрын

    1st comment

  • @preethi2802
    @preethi280210 күн бұрын

    Hey i got a doubt....as magnetic fields are formed due to dipoles and if we see in an atom level then electron spins in its own path making a current loop, okayyy but how do u say electrons act as a dipole....where is the current loop and how do we consider electron as a dipole(as electron is a monopole)

  • @The_Engineer
    @The_Engineer2 жыл бұрын

    I'm confused because I've heard of the magnetic field strength being referred to as B... and I know that m must not be the same because its formula is different, but its also referred to in this video as the tiny magnets "strength". How is this strength(m) different than the magnetic field strength(B)? Any clarifications would be greatly appreciated, and would help me a lot in getting to learn the subject.

  • @i__stand__with__palestine__

    @i__stand__with__palestine__

    2 жыл бұрын

    Same 🥺

  • @architmishra015

    @architmishra015

    2 жыл бұрын

    Okay so here's what I've understood till now. B is use to refer magnetic flux density or magnetic induction with it's formula, B= Φ/A, where Φ is the magnetic line of forces and A is the area. So B or magnetic induction is kinda power of the magnet itself whereas m is use to denote the power of one pole, either north or south

  • @monibasharif4959
    @monibasharif4959 Жыл бұрын

    awlawww❤

  • @dellasduffy9445
    @dellasduffy94452 жыл бұрын

    I am being effected by waves through walls in unit home from technology being used what to do

  • @VinodPal-sv8kq
    @VinodPal-sv8kq3 жыл бұрын

    Hello Sir B.tech aerospace engineering in Cambridge university total fees please speak in youtube

  • @raviadarshrajpoot3013
    @raviadarshrajpoot30132 жыл бұрын

    This voice is of Ashish Ranjan Sir, an Ex-ISRO scientist

  • @ro-hitkumar2611
    @ro-hitkumar26112 жыл бұрын

    Sir please make lectures in hindi on khan academy India YT channel.

  • @supportWCHS
    @supportWCHS3 жыл бұрын

    Physicists are hopelessly confusing about 2D, 3D. Please explicitly state or picture whether the phenomena is 2D or 3D. Atoms are 3D but often pictured and portrayed 2D. Don't know in this lecture.

  • @sargamgandhi8273
    @sargamgandhi8273 Жыл бұрын

    How can a electron starts revolving ...without putting battery ....

  • @ghostnotbedsheet

    @ghostnotbedsheet

    Жыл бұрын

    Are u talking about how electrons revolve around the nucleus of an atom?Then there's this thing called Bohr's atomic model

  • @ourtamilnadu9011
    @ourtamilnadu90112 жыл бұрын

    You said that electrons move from south to north pole ,indicating direction and u said forget about it just now.Buttt my mind doesn't hear ur words!!!!!!!!!🤯

  • @sargamgandhi8273
    @sargamgandhi8273 Жыл бұрын

    Can you reply...plzzz

  • @bhavanabalaraman7359
    @bhavanabalaraman735921 күн бұрын

    Who else is a fan of Mahesh Shenoy ?🙋

  • @vivekgupta3692
    @vivekgupta3692 Жыл бұрын

    *_Summary Of The Video :-_* *Magnetic Dipole & Dipole Moment* * Current loop behave like a tiny bar magnet no matter what the shape of loop is. * Technically we use a term for tiny bar magnet known as *Magnetic Dipole* * The strength of the dipole is determined by the term *Magnetic Dipole Moment* * Magnetic Dipole Moment is a vector quantity * We can determine the direction of magnetic moment using our *Right Hand Rule* * If we clasp our right hand in such a way that our four finger represent direction of current then our thumb will showing the direction of magnetic moment.

  • @himanidhankhar5149
    @himanidhankhar51493 жыл бұрын

    Faking accent😒

  • @sjraneyumo6049
    @sjraneyumo60493 жыл бұрын

    bring Sal Khan back, this guy's voice is the worst

  • @justlearn3444

    @justlearn3444

    3 жыл бұрын

    Noooo I love his voice rather than sal's Everyone has a choice 🙄🙄

  • @justlearn3444

    @justlearn3444

    3 жыл бұрын

    And by the way He is for khan academy india Lil bit indian accent 🙄

  • @gautammure

    @gautammure

    2 жыл бұрын

    Shut up and learn physics. Excellent illustration by this dude.