Dielectrics in capacitors | Circuits | Physics | Khan Academy

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  • เผยแพร่เมื่อ 16 ก.ย. 2013
  • How dielectrics function in circuits. By David Santo Pietro. Created by David SantoPietro.
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    Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry.
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ความคิดเห็น • 528

  • @felixgonzales9786
    @felixgonzales9786 7 ปีที่แล้ว +938

    i learned more in 7 min here than in 3hrs in my physics course thanks

  • @nadiequintero9981
    @nadiequintero9981 4 ปีที่แล้ว +125

    This is the ultimate way to teach physics, with moving images. Most of us aren't capable to follow along a 2 hour long explanation of how this works without any visualization. With a proper illustrarion of the concept, a 6 min video was enough to save my ass from a test! Thank you so so much to everyone who contributes in Khan Academy.

    • @Sambubhai0005
      @Sambubhai0005 3 หลายเดือนก่อน

      Exactly.....they should understand that we want visualisation to understand physics😔.

  • @stepbystepscience
    @stepbystepscience 9 ปีที่แล้ว +184

    Excellent, straight forward explanation.

    • @BlueEyes-WhiteDrag0n
      @BlueEyes-WhiteDrag0n 6 ปีที่แล้ว

      Hey its THE REAL
      STEP BY STEP SCIENCE !!!

    • @swarnendubanerjee8089
      @swarnendubanerjee8089 3 ปีที่แล้ว

      @@BlueEyes-WhiteDrag0n Kindly follow and subscribe the channel too for better understanding..
      th-cam.com/video/2HiRqXCcIlM/w-d-xo.html
      Thanks

  • @allenwang3331
    @allenwang3331 10 ปีที่แล้ว +312

    This video is a gift from the God.

    • @mechikaboombayah4960
      @mechikaboombayah4960 6 ปีที่แล้ว +1

      Allen Wang and the god is KhanAcademy

    • @BlueEyes-WhiteDrag0n
      @BlueEyes-WhiteDrag0n 6 ปีที่แล้ว +1

      +Nisa_Tandon Now thats just Sucking his Balls
      😑

    • @smilingkanye7392
      @smilingkanye7392 3 ปีที่แล้ว +1

      YES

    • @swarnendubanerjee8089
      @swarnendubanerjee8089 3 ปีที่แล้ว

      @@mechikaboombayah4960 Kindly follow and subscribe the channel too for better understanding..
      th-cam.com/video/2HiRqXCcIlM/w-d-xo.html
      Thanks

    • @swarnendubanerjee8089
      @swarnendubanerjee8089 3 ปีที่แล้ว

      @@BlueEyes-WhiteDrag0n Kindly follow and subscribe the channel too for better understanding..
      th-cam.com/video/2HiRqXCcIlM/w-d-xo.html
      Thanks

  • @anuraagkaravadi1640
    @anuraagkaravadi1640 8 ปีที่แล้ว +83

    one of the best tutorials i have ever watched .Great job!!!

  • @mindfreaks1681
    @mindfreaks1681 7 ปีที่แล้ว +114

    idk why should we spend money and effort in university and keep listening to old people that they dont know how to deliver the concept to us staying at home and watching this is just perfect to me thx i loved it all :)

    • @mindaugaskazlauskas5530
      @mindaugaskazlauskas5530 5 ปีที่แล้ว +9

      Mind Freaks that's right, there should be possibility just to pay for exams. If someone have enough knowledge to pass exams, when they should have possibility to get diploma. Diplomas only shows what person have competence to do whats is waited on it. In old times people had to go to university to get information, these days smart people can get information easily at home.

    • @mohammedalhabshan5238
      @mohammedalhabshan5238 3 ปีที่แล้ว +5

      Now we are staying at home :)

    • @swarnendubanerjee8089
      @swarnendubanerjee8089 3 ปีที่แล้ว

      @@mindaugaskazlauskas5530 Kindly follow and subscribe the channel too for better understanding..
      th-cam.com/video/2HiRqXCcIlM/w-d-xo.html
      Thanks

    • @MinkFranchise
      @MinkFranchise 2 ปีที่แล้ว +2

      @@mindaugaskazlauskas5530 Only half correct... it also shows a person had the powers of focus, dilligence, tenacity, and dicipline to complete something complex, organized, and challenging over an extended period of time without flaming out... Many people after cramming for exams on youtube would totally flame out over time...not retain information, and be horrible people to depend on when trying to forward your business.

  • @asmahaque8558
    @asmahaque8558 7 ปีที่แล้ว +201

    I LITERALLY CLAPPED AFTER THIS. YOU GODSENT!!!!

    • @jacobvandijk6525
      @jacobvandijk6525 4 ปีที่แล้ว +3

      Doing physics and still thinking there is a god???

    • @alieser7770
      @alieser7770 4 ปีที่แล้ว +10

      @@jacobvandijk6525 that's not the point you edgy atheist

    • @jacobvandijk6525
      @jacobvandijk6525 4 ปีที่แล้ว +1

      @@alieser7770 O, really? ;-)

    • @alieser7770
      @alieser7770 4 ปีที่แล้ว

      @@jacobvandijk6525 unfortunately

    • @shorifulhaque5137
      @shorifulhaque5137 3 ปีที่แล้ว +1

      @@jacobvandijk6525 How ya doin mate. Could you give an insight into how physics disproves the existence of a higher power? Thanks. If everything that begins to exist has a cause and the universe had a beginning, then the universe has a cause. This 'cause' must not have a cause as that would result in an infinite chain that would mean we would never have existed. Therefore, whatever this 'cause' is, we know that a) it is infinite and b)it is uncreated(meaning it has always existed; the concept of time as we know it does not exist for this being).
      I would love to discuss this with you mate let me know if you want to hop on discord.

  • @wernerkroneman
    @wernerkroneman 10 ปีที่แล้ว +49

    This was SO simple to understand.

  • @laiwei5974
    @laiwei5974 9 ปีที่แล้ว +189

    I would give you Nobel Teaching prize

    • @swarnendubanerjee8089
      @swarnendubanerjee8089 3 ปีที่แล้ว

      Kindly follow and subscribe the channel too for better understanding..
      th-cam.com/video/2HiRqXCcIlM/w-d-xo.html
      Thanks

  • @xoxo-yp1fc
    @xoxo-yp1fc 5 ปีที่แล้ว +24

    Omg this was the best teaching I ever gone through in my life
    Simple
    Neat
    Short period of time
    Amazing

  • @alwaysdisputin9930
    @alwaysdisputin9930 5 ปีที่แล้ว +7

    Thanks. That helped me to understand things where other videos failed:
    The capacitor has 2 plates. The battery pushes electrons onto 1 of the plates until it's crammed with electrons & the battery can't push any more on.
    Inserting a dielectric increases capacitance because
    1) the electrons (in the dielectric's atoms) lean towards the positive plate of the capacitor
    2) therefore, each atom in the dielectric becomes polarised = 1 side is negative & the other side is positive
    3) near the positive plate, there are some dielectric atoms. The negative sides of these atoms cancels out some of the positive plates positive-ness
    4) near the negative plate, there are some dielectric atoms. The positive sides of these atoms cancels out some of the negative charge on the negative plate
    6) thus the negative plate becomes less negative
    7) the battery is now able to push more electrons onto the negative plate - thus the capacity of the negative plate to hold electrons has increased

  • @sujayhedau8725
    @sujayhedau8725 9 ปีที่แล้ว +19

    you explained this better than all of my teachers combined.

  • @fatimazahra-sq9wy
    @fatimazahra-sq9wy ปีที่แล้ว +11

    the satisfaction of having all the concepts cleared in just 6 mins is just undescribable ... for the 1st time, this concept got cleared... hats off to u sir😍🥰💯💗❤💝💗💓❤‍🔥💥🔥

  • @VG__
    @VG__ 2 ปีที่แล้ว +3

    I am blown away😯Is this how much simple, intersting and LOGICAL physics is?🥺omg, why teachers let us just mug up those sophisticated mathematical equations whn physics can be explained this way🥺🥺🥺❤️❤️❤️You are a gem I tell u. Thankyou🙏

  • @NoNTr1v1aL
    @NoNTr1v1aL 8 ปีที่แล้ว +22

    What is the background music? It sounds awesome with your explanation!

  • @ProtoG42
    @ProtoG42 9 ปีที่แล้ว +22

    Great explanation!

  • @TheMaskedOne2G
    @TheMaskedOne2G 8 ปีที่แล้ว +28

    now this is some real skilled explanation!
    thank you, David Santo Pietro.

    • @swarnendubanerjee8089
      @swarnendubanerjee8089 3 ปีที่แล้ว

      Kindly follow and subscribe the channel too for better understanding..
      th-cam.com/video/2HiRqXCcIlM/w-d-xo.html
      Thanks

  • @AnandBaburajan
    @AnandBaburajan 7 ปีที่แล้ว +15

    How does he do it? So perfect!

  • @taniaflores7240
    @taniaflores7240 4 ปีที่แล้ว

    Amazing explanation! I had struggled with this concept and now I finally understand. Thank you so much, sir!

  • @macovv7320
    @macovv7320 3 ปีที่แล้ว +4

    There must be a noble teaching prize now a days (because I think many teachers who don't know how to teach have become teachers) and this guy, David, must be, along with sal, among the first ones to get it.

  • @rumeenchowdhury6976
    @rumeenchowdhury6976 4 ปีที่แล้ว +1

    It’s a great video! Really cleared my confusions!

  • @Carito680
    @Carito680 5 ปีที่แล้ว

    I've been studying this for 4 hours and needed a better way than just reading the textbook. I completely followed and I feel so much more refreshed. Thank you!

  • @CodecFace
    @CodecFace 9 ปีที่แล้ว

    Thank you! I thought this process into the ground and the one thing I was missing was that some of those charges were canceling, which explained everything. Rad vid!

  • @lamawehbe1045
    @lamawehbe1045 9 ปีที่แล้ว +2

    So helpful! Thank you very much ☺

  • @arijitmondal28
    @arijitmondal28 8 ปีที่แล้ว +2

    Excellent simple explanations.

  • @ayankhan8204
    @ayankhan8204 3 ปีที่แล้ว +3

    Ooohhh bhai.. ULTIMATE !!! The real definition of TEACHING;)

  • @shivani3279
    @shivani3279 9 ปีที่แล้ว +2

    really very nicely explained....thank you..

  • @sweetttpeaches
    @sweetttpeaches 5 ปีที่แล้ว

    Absolutely wonderful conceptual explanation; these are so hard to find nowadays. Thank you so much.

  • @achilleswang2255
    @achilleswang2255 8 ปีที่แล้ว +1

    It is so clearly explained!!!

  • @shitstapper
    @shitstapper 8 ปีที่แล้ว

    thank you. your work is greatly appreciated by those studying higher level physics. you are the silent hero....

  • @farhadabbasi4553
    @farhadabbasi4553 8 ปีที่แล้ว +1

    Great!The best explanation.

  • @VardhanMittal
    @VardhanMittal 2 ปีที่แล้ว +1

    i was full confused with this topic very nice explanation man!
    thank you for adding such a nice value in my life!

  • @ooo-sg1xm
    @ooo-sg1xm 7 ปีที่แล้ว

    I spent hours trying to understand this but now I fully understand it in under 7 mins!!! Feels good man. Thank you for the awesome video :)

  • @ghsbharathiyarnagar8326
    @ghsbharathiyarnagar8326 6 ปีที่แล้ว

    This is absolutely amazing .I totally understand it now. this is so satisfying. Thank you soo much.

  • @srinuchandaka3959
    @srinuchandaka3959 4 ปีที่แล้ว +2

    Hey❕
    You literally cleared all my doubts😃
    *Thank You Infinity Times*

  • @Standard_Logic
    @Standard_Logic 8 ปีที่แล้ว +1

    I like how fast you speak and the way you present the material, it's very easy to follow. Thank you.

  • @dimaabed9768
    @dimaabed9768 7 ปีที่แล้ว

    Thank you very much! I definitely feel better right now towards my physics exam tomorrow because of this great video! Hope I'll do good and if I do, credits will be to you Mr.SantoPietro!

  • @craigslinger43
    @craigslinger43 7 ปีที่แล้ว

    Brilliant video; well explained and easy to understand. Thanks a lot!

  • @saadsouabni
    @saadsouabni 3 ปีที่แล้ว

    Best explanation of dielectrics I've seen and I've been in this field for years!

  • @tejasmd8143
    @tejasmd8143 3 ปีที่แล้ว +2

    7 years later, you're still helping a lot of students. What's better news?

  • @thandiferris954
    @thandiferris954 8 ปีที่แล้ว +2

    Differently... This was a great vid..

  • @omarthabit99
    @omarthabit99 9 ปีที่แล้ว +1

    im impressed .. really thank you for this amazing vids

  • @nitinpawar47
    @nitinpawar47 8 ปีที่แล้ว +2

    Amazing... wonderful explanation.... Thank you..... :)

  • @angusquigley3713
    @angusquigley3713 4 ปีที่แล้ว

    Awesome video! This cleared up a problem I had in class today.

  • @mndnw_scramblr
    @mndnw_scramblr 9 ปีที่แล้ว

    this is really great! helped me in my report

  • @robertgalligan7273
    @robertgalligan7273 3 ปีที่แล้ว

    Hello,
    I am currently doing a module as part of my electromechanical course and this was an amazing video. It was simple to follow and very informative. Thank you very much.

  • @majidnesar
    @majidnesar 5 ปีที่แล้ว

    I've been turning over the pages of my physics textbook since a week, until I was gifted with this VIDEO.
    I actually learned the concept in 7mins which I was wondering about for whole week♥️♥️♥️

  • @crow1628
    @crow1628 ปีที่แล้ว

    this made so easy to understand, it's insane, thank you for your work!

  • @XCeedSaid
    @XCeedSaid 5 ปีที่แล้ว

    Clear concise explanations, thank you.

  • @mrbeanseries9932
    @mrbeanseries9932 5 ปีที่แล้ว +1

    speechless! fabolous explanation!
    Really gr8

  • @Harsh-zj7lm
    @Harsh-zj7lm 6 ปีที่แล้ว

    Thank You So much, just what i needed after all these time.

  • @aryensujjan
    @aryensujjan 7 ปีที่แล้ว

    awesome video especially that part you explained how dielectric cancel charges on plates is just amazing

  • @brade469
    @brade469 9 ปีที่แล้ว

    These videos are top shelf. Thank you so much. Very...very well done.

  • @dominicestebanrice7460
    @dominicestebanrice7460 8 หลายเดือนก่อน +1

    Astonishingly informative video!

  • @pasta7396
    @pasta7396 2 ปีที่แล้ว

    Thank you so much, I feel that learning can actually be fun when it is taught like this

  • @illinoska
    @illinoska 5 ปีที่แล้ว

    Very simple and easy to understand. Thanks!

  • @TheCentral99
    @TheCentral99 10 ปีที่แล้ว

    made so much sense! thanks alot!

  • @TheAITools47
    @TheAITools47 4 ปีที่แล้ว

    this is awsome ,really really brief and outsstanding ?

  • @anuradhadevi1824
    @anuradhadevi1824 4 ปีที่แล้ว

    So much clarity....u made things so easy for me...thank u very much sir

  • @shreyakommuri3929
    @shreyakommuri3929 5 ปีที่แล้ว +1

    Speechless man! Really.

  • @randomstuffswithrrd
    @randomstuffswithrrd 5 ปีที่แล้ว +2

    Well done I have my entrances next year... And Khan Academy is essential to quickly revise up things ✌️👁️

  • @awesomelily2896
    @awesomelily2896 8 ปีที่แล้ว

    outstanding video....superb work guysss..realllyy what a explanation n soo interesting 2 see..watched all in 1 go ...

  • @mohammedhussein5806
    @mohammedhussein5806 8 ปีที่แล้ว +1

    the best explanation of capacitors

  • @cbbhvjc
    @cbbhvjc 4 ปีที่แล้ว

    Best explanation I have seen for the purpose of a dielectric!

  • @ferociouswaves
    @ferociouswaves 10 ปีที่แล้ว

    I love the way you pronounce the word "Farad". Thank you so much for this very informative video!

  • @asthatiwari2648
    @asthatiwari2648 4 ปีที่แล้ว

    Got my concept cleared..loved the video...also the voice was like u r singing a song...so it was more wonderful to study

  • @fredk9531
    @fredk9531 8 ปีที่แล้ว

    The best explanation that I have ever came across!

  • @Rsingh1
    @Rsingh1 6 ปีที่แล้ว +2

    Vvvv'vvvvvvvvvvvv nice....... Perfect absolutely answered each of my questions... .. . . . .i just want to this video a no of likes.............

  • @MC-nq8dg
    @MC-nq8dg 10 ปีที่แล้ว

    This was so helpful omg thank you

  • @mubarakabdullahi5068
    @mubarakabdullahi5068 ปีที่แล้ว

    This was such a wonderful and succinct explanation. THank you!!!

  • @hemasingh5542
    @hemasingh5542 8 ปีที่แล้ว

    awesome explanation.I've asked several teachers but no one made me understand so nicely.

  • @robertbatista50
    @robertbatista50 ปีที่แล้ว

    Wow! Just wow. While there are many videos explaining capacitors and Leyden jars, this is the best at explaining the derivation of the formula.

  • @iPokerrr
    @iPokerrr 7 ปีที่แล้ว

    Great explanation!
    Thank you! :)

  • @jaime_coca
    @jaime_coca 4 ปีที่แล้ว

    Am not normally a big fan of Khan Academy explanations but I must say this video is top-notch. Thanks!

  • @tejakiran1577
    @tejakiran1577 6 ปีที่แล้ว

    Thanks a lot .... U made me understood the clearcut idea behind dielectrics

  • @vojtatesar9239
    @vojtatesar9239 2 ปีที่แล้ว

    I have needed this answer for about year but I haven't found it until now, thanks a lot!

  • @asjith5327
    @asjith5327 5 ปีที่แล้ว +1

    wow .perfect explanation.....

  • @alishaparveen1045
    @alishaparveen1045 6 ปีที่แล้ว

    Really good video..liked it so much..simple explanation but clear.

  • @kishtarapu
    @kishtarapu 6 ปีที่แล้ว

    Excellent explanation.
    Simple and. Straight forward.

  • @bishnudevchaudhary1532
    @bishnudevchaudhary1532 9 ปีที่แล้ว

    Really nice video. It help me to memorize about dielectric

  • @leamsi4ever
    @leamsi4ever 7 ปีที่แล้ว

    Are there any other electrical playlists with this instructor? I have been watching the Khan Academy Electrical Engineering videos but those went over my head, this guy and his diagrams are very easy to understand.

  • @fodaysheriff5828
    @fodaysheriff5828 10 ปีที่แล้ว

    incredible..well explain

  • @princesspat5239
    @princesspat5239 3 ปีที่แล้ว

    Thank you, i didnt understand capacitors before and how it connected to the formula : this cleared my mind

  • @Camyum
    @Camyum 3 ปีที่แล้ว

    Great video, thanks! I’m curious however if it’s the atoms in the dielectric canceling out charge from the plates that leads to increased capacitance why do the thinner the dielectric the better or more capacitance they can store? It seems counterintuitive because there would be less atoms to cancel out the charges? Gracias!

  • @momoabdul2755
    @momoabdul2755 5 ปีที่แล้ว

    Interesting video... Good job... Thanks for helping my understanding

  • @nasimaakter8832
    @nasimaakter8832 ปีที่แล้ว

    Best ever explanation! Simple but Complete!

  • @abdus1902
    @abdus1902 2 ปีที่แล้ว +1

    Loved the video!

  • @amandamonteiro5308
    @amandamonteiro5308 3 ปีที่แล้ว

    wow, I'm incredibly choqued! this video is good, thanks!!!

  • @bondsongmusic
    @bondsongmusic 2 ปีที่แล้ว +1

    Thanks for this very clear explanation.

  • @muthiahpillaipalanichamy3939
    @muthiahpillaipalanichamy3939 9 ปีที่แล้ว

    Very neatly explained. Excelent

  • @rajbhar007
    @rajbhar007 5 ปีที่แล้ว

    Explained like a Boss....!!!
    Thanks a lot.

  • @KRISHNAYb
    @KRISHNAYb 9 ปีที่แล้ว

    u r great! excellent teaching!

  • @vr9722
    @vr9722 5 ปีที่แล้ว

    Thank u so much. Now only i understood the concept.

  • @aiswaryathilakan2588
    @aiswaryathilakan2588 3 ปีที่แล้ว

    That was the best explanation l have ever heard. Thank u for ur efforts

  • @pranjalmech8859
    @pranjalmech8859 5 ปีที่แล้ว

    Thank you for the wonderful explanation

  • @Arpit.singh.
    @Arpit.singh. 4 ปีที่แล้ว

    Amazed by ur explanation. I hope you contribute more

  • @yeleeena
    @yeleeena 7 ปีที่แล้ว +6

    Love the music in background (A)

  • @akshatrastogi9063
    @akshatrastogi9063 2 ปีที่แล้ว

    This is excellent, absolutely excellent!

  • @JuliusUnique
    @JuliusUnique 3 ปีที่แล้ว

    great video, thanks!

  • @chamindrisulakshi2153
    @chamindrisulakshi2153 9 ปีที่แล้ว

    Great work.. Thank you..