Energy of a capacitor | Circuits | Physics | Khan Academy

Поделиться
HTML-код
  • Опубликовано: 16 сен 2013
  • This video explains the potential of a capacitor and how they function in a circuit. By David Santo Pietro. Created by David SantoPietro.
    Watch the next lesson: www.khanacademy.org/science/p...
    Missed the previous lesson? www.khanacademy.org/science/p...
    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.
    About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
    For free. For everyone. Forever. #YouCanLearnAnything
    Subscribe to Khan Academy’s Physics channel: / channel
    Subscribe to Khan Academy: ruclips.net/user/subscription_...

Комментарии • 204

  • @nnkk7742
    @nnkk7742 8 лет назад +129

    Who is this amazing individual?

  • @ItsaStringThing
    @ItsaStringThing 9 лет назад +196

    It's like a combination of high school physics and Blues Clues

  • @vandanarawat7392
    @vandanarawat7392 3 года назад +50

    People like you make us fall in love with the subject. I don't understand why teachers complicate the simple concepts!
    I can't thank you enough for these videos sir.

  • @michaeladama7788
    @michaeladama7788 10 лет назад +67

    A phenomenal video as someone who hates physics, I was apprehensive about studying capacitance. But this video made an seemingly difficult topic, very easy. The beauty of this video is it's simplicity!!! Great job David Santo Pietro. Thanks Khan Academy!!!!

    • @user-sw4uq5ix6h
      @user-sw4uq5ix6h 5 месяцев назад

      @@RigidMan Do you know what the background music is used in this video?

  • @garylai5174
    @garylai5174 7 лет назад +13

    This dude deserves a nobel prize in teaching

  • @rithvikshindihatti1215
    @rithvikshindihatti1215 8 лет назад +75

    The way he made us remember those formulas!!!!HAHAHA

    • @user-sw4uq5ix6h
      @user-sw4uq5ix6h 5 месяцев назад

      Do you know what the background music is?

  • @ethanpowell2376
    @ethanpowell2376 8 лет назад +93

    oooooooooooooooooooooooooooooooooooooooooooooooooooo hahahahaha those kids :D

    • @zoalerix
      @zoalerix 5 лет назад +6

      ngl It's kinda annoying

  • @Bugra0528
    @Bugra0528 7 лет назад +9

    This video is PERFECT!
    Thanks a lot!
    Very detailed and precise.

  • @bakaiser0111
    @bakaiser0111 6 лет назад +2

    Bro.. These videos are SO good. With the real life examples and super thorough explanations and tips. I appreciate this a lot. Physics is not as scary now... Thank you so much!! I had to go on the youtube page for these vids from the khan website just to click like!

  • @popprahchaya1192
    @popprahchaya1192 9 лет назад +7

    Great Vid! Easy to follow! Probably the best i've see so far

  • @dimaabed9768
    @dimaabed9768 7 лет назад +3

    This is very amusing yet very helpful and simple to understand. Thanks a lot!

  • @salieudanso4668
    @salieudanso4668 9 лет назад +4

    The best teaching videos. Thanks professor, I admire this great system of teaching experience.

  • @117117nobody
    @117117nobody 9 лет назад +6

    you just got to love these videos

  • @PatrickPereiraVieira04
    @PatrickPereiraVieira04 7 лет назад +2

    Quality video. Do you have one on capacitors charging with constant current?

  • @amanjaved3095
    @amanjaved3095 3 года назад +1

    How so concise! This perfect video answered the questions I had. 😊

  • @shengjiashen4651
    @shengjiashen4651 2 года назад +1

    THIS IS THE MOST INTERESTING PHYSICS VIDEO I'VE EVER SEEN IN MY LIFE! GREAT GREAT JOB!!!!!!

  • @Toujimbwa
    @Toujimbwa 10 лет назад +2

    This was so good! I understood so well!

  • @dilipbordoloi2641
    @dilipbordoloi2641 7 лет назад +4

    I want lessons of Ac by David Santo Pietro with the music before end of Dec plz

  • @nilucheh
    @nilucheh 4 года назад +1

    man!the way you teach us,is just..perfect...wish our teachers had this ability too.

  • @adibabrar1702
    @adibabrar1702 4 года назад +2

    This channel is my education

  • @adrianaharisya1257
    @adrianaharisya1257 4 года назад

    THANK YOU SO MUCH!! I had troubles remembering what my lecturer taught me and reading textbook could not give me visual explanation. Thank you for this video!!

  • @garylai5174
    @garylai5174 7 лет назад +12

    DAT sound effects tho

  • @georgemartin1432
    @georgemartin1432 7 лет назад +7

    Thank you - great video. Quick question: can someone please explain how the voltages were calculated in the final section? Adding up the voltages along one route gives 10.5V but the PD of the supply is 10V? Thanks

    • @euanseaman1774
      @euanseaman1774 3 года назад +2

      The voltages were assumed, as though they were given in a question, he didn't calculate them, rather he just made up values for each so the formula would work.

  • @darshalbarapatre1364
    @darshalbarapatre1364 3 года назад +1

    I m able to visualize each and every concept clearly.. thanks bro

  • @eshapant8621
    @eshapant8621 7 лет назад +19

    I'm liking this for the C pun

  • @mahamatissa6483
    @mahamatissa6483 7 лет назад +3

    informative video keep it up ..TQ

  • @premsingh2261
    @premsingh2261 Год назад +1

    The Best Explanation 👌 thanks

  • @karhukivi
    @karhukivi 4 года назад

    Good explanation and the only video that explains the 1/2 average factor, - thanks!

  • @dvscrobe
    @dvscrobe 6 лет назад +1

    My Physics II textbook doesn't explain well where the 1/2 comes from. This covered it perfectly!

  • @scienceandphilo
    @scienceandphilo 7 лет назад +1

    Very informative. Keep this good work up

  • @hunterjiang5894
    @hunterjiang5894 2 года назад

    Clearest video explanation of this concept ever!

  • @ghgghghg2464
    @ghgghghg2464 10 лет назад

    very helpful & nice presentation
    , thanks

  • @darondasavage4140
    @darondasavage4140 3 года назад

    I love the visuals and the music. Great explanation.

  • @voteforsocks45632
    @voteforsocks45632 4 года назад

    Excellent teaching. I could barely understand this stuff until I came across these videos.

  • @mohammadalshawabkeh5791
    @mohammadalshawabkeh5791 6 лет назад

    Oooh!
    Nice tutorial!

  • @moushmisrimayi1445
    @moushmisrimayi1445 3 года назад

    Loved it completely

  • @samarsurya9703
    @samarsurya9703 7 лет назад +3

    i love these videos...

  • @infinitygaming4831
    @infinitygaming4831 7 лет назад +10

    best physics teacher in the world

  • @joegrant4245
    @joegrant4245 6 лет назад

    Thank You. You explained in 6 min what my Physics teacher took a week to explain.

  • @nasimaakther8069
    @nasimaakther8069 2 года назад

    love this my all trouble has gone away.

  • @parveenpayal6554
    @parveenpayal6554 7 лет назад +2

    awesome..😍

  • @dominicestebanrice7460
    @dominicestebanrice7460 8 месяцев назад

    Educational content on YT doesn't get any better than this. The Khan India guy and now this guy! Amazing.

  • @juanfeeer
    @juanfeeer 7 лет назад +23

    I think this is like relationships. Opposites attract, then little by little the capacitance (dopamine/love/attraction) is less every time you charge (hang) the capacitor (the relationship).

  • @heyilikeair8521
    @heyilikeair8521 8 месяцев назад

    I was so confused by the half. Thank you so much.

  • @christiangutierrez7193
    @christiangutierrez7193 6 лет назад +2

    that background music is mesmerizing

  • @mohammedhussein5806
    @mohammedhussein5806 8 лет назад +15

    finally , i understood how capacitors work. Thank you so much for this helpful lessons

    • @nghialetrong7039
      @nghialetrong7039 8 лет назад +1

      2 the parallel capacitor is fully charged then the charge. then take the power out, the charge in two copies will look like?

    • @Aziz-wu2iy
      @Aziz-wu2iy 2 года назад

      @@nghialetrong7039 yes

  • @neuva_2117
    @neuva_2117 4 года назад

    you rocked it in this video!!

  • @antaresrepublic
    @antaresrepublic 3 года назад

    Thankks i understand better now

  • @funwithehsan7827
    @funwithehsan7827 3 года назад

    I didn't like physics before watching your videos...........u r an amazing individual..........u r a real teacher ❤️

  • @johnjericdeluna4686
    @johnjericdeluna4686 3 года назад

    Very well said! ❤️

  • @dilnargheyret1465
    @dilnargheyret1465 5 лет назад +5

    great video! but for the last example, shouldn't the voltages be 10V (1+9) according to the batteries? But the voltage in that circuit was actually 10.5V (6.25+3+1.25)?

    • @user-mw2sk7pi5x
      @user-mw2sk7pi5x 11 месяцев назад

      That what I was thinking! A simple typo, he was off by 0.5V, but the concept was still delivered very well!

  • @location4898
    @location4898 9 лет назад +1

    very good..

  • @prakashbudthapa9975
    @prakashbudthapa9975 5 лет назад

    u r amazing , man .. keep going

  • @ramkrishnab1
    @ramkrishnab1 7 лет назад +2

    what happens when to energy variation when dielectrics used

  • @nghialetrong7039
    @nghialetrong7039 8 лет назад +1

    very good.

  • @kainatexpertdesigner41
    @kainatexpertdesigner41 3 года назад +1

    you're amazing teacher keep teaching in this way up May ALLAH ALMIGHTY bless you

  • @bharath9951
    @bharath9951 9 лет назад +3

    Helped me a lot 🆒🆒🆒🆒🆒🆒🆒🆒

  • @nasiiraomar5425
    @nasiiraomar5425 2 месяца назад

    This man is a legend🎉❤

  • @rafehn
    @rafehn 6 лет назад

    Best explanation on EARTH 🌏

  • @boopathimanikandan1497
    @boopathimanikandan1497 5 лет назад +1

    for example if we take plates made up of copper, after a capacitor charged, will plates of capacitor turns to Cu+(positively charged plate) and Cu-(negatively charged plate) or capacitor plates remains same as Cu?

  • @franciscosanchez9406
    @franciscosanchez9406 6 лет назад

    Does the capacitor pushes the amps that the load needs or more then then it requires?

  • @simozy4475
    @simozy4475 3 года назад

    thank you very much

  • @ashishkumarsharma1323
    @ashishkumarsharma1323 5 лет назад

    well, in one of my books while reading about capacitance. There was a topic that when an uncharged conductor is brought near a charged conductor, it leads to a decrease in Potential of the charged conductor which decreases the Capacitance.
    But in some other book, I read that Capacitance doesn't depend upon q and V.
    What's the correct explanation?

  • @rithvighachandrasekaran6960
    @rithvighachandrasekaran6960 3 года назад

    I SEE, this is a goldmine

  • @surbhin7451
    @surbhin7451 4 года назад

    BEAUTIS!!

  • @pvp9897
    @pvp9897 9 лет назад +10

    Very Well Work On the Education, Keep Going On ,, Never Stop ....................

    • @nghialetrong7039
      @nghialetrong7039 8 лет назад +1

      2 the parallel capacitor is fully charged then the charge. then take the power out, the charge in two copies will look like?

  • @nghialetrong7039
    @nghialetrong7039 8 лет назад +2

    2 the parallel capacitor is fully charged then the charge. then take the power out, the charge in two copies will look like?

  • @ananyagoel7591
    @ananyagoel7591 4 года назад +5

    Those kids tho😂😂

  • @xenialxenagogue5978
    @xenialxenagogue5978 3 года назад +1

    My heart just broke wen he didn't know integration! I was excited to see if he can show that with this much ease😂.. awesome video sir thanks a lot

  • @thulsikatte5895
    @thulsikatte5895 Год назад

    Thank you so much .....

  • @REviewOFF07
    @REviewOFF07 2 года назад

    Uff awesome ❤

  • @classmateeducare4682
    @classmateeducare4682 7 лет назад

    OMG superb.

  • @qaipak1
    @qaipak1 9 лет назад

    Brilliant.

  • @zenapsgas
    @zenapsgas 6 лет назад

    Good shit!

  • @thefenerbahcesk4156
    @thefenerbahcesk4156 5 лет назад

    Studying for the MCAT right now. I wish I had learned this in High School or Undergrad.

  • @himsoni7112
    @himsoni7112 3 года назад

    Best Science Communicator

  • @Deadlyaztec27
    @Deadlyaztec27 5 лет назад

    This man is a genius.

  • @kashanbashdar3440
    @kashanbashdar3440 Год назад

    THANK YOU THANK YOU THANK YOU

  • @HariKrishnan-vp5ed
    @HariKrishnan-vp5ed 3 года назад

    thanks a lot

  • @ahmeddildar4250
    @ahmeddildar4250 3 года назад

    Thanks 🙏 a lot

  • @ishwargowda
    @ishwargowda 5 лет назад

    Love it

  • @frogsuper5604
    @frogsuper5604 3 года назад

    Love you so much

  • @emankhalid3948
    @emankhalid3948 4 года назад

    Hats off

  • @jsathibabu8822
    @jsathibabu8822 3 года назад +1

    Sir does the charge travel through battery during charging process if it does that energy stored in capacitor will be increase if it does not do that how charging process done PLEASE EXPLAIN

  • @asgharchakra534
    @asgharchakra534 5 лет назад

    awwwwwsome

  • @cnureks6667
    @cnureks6667 3 года назад

    Sir please do video to understand parallel plate capacitor

  • @AHalo2019
    @AHalo2019 6 месяцев назад

    Thanks ❤

  • @TheOnePath570
    @TheOnePath570 9 лет назад

    nice one

  • @KN0Wit
    @KN0Wit 3 года назад +1

    where does other 1/2 energy goes off? if only 1/2 energy stored in capacitor .

  • @akashwayal8797
    @akashwayal8797 3 года назад

    Do we have inductor series just like this ?

  • @domiNATEion
    @domiNATEion 5 лет назад

    Can someone please explain to me how at 6:20 the voltages add up to 10 volts? They should right?

  • @pritamsuna3481
    @pritamsuna3481 7 лет назад +4

    woohoo.....best

  • @Tom-vu1wr
    @Tom-vu1wr 2 года назад

    4:52 what about dimensional analysis?

  • @seasnek7024
    @seasnek7024 4 года назад

    I found in Uni that the voltage across the capacitor gets written as dv (dielectric voltage), which is to differentiate the voltage across it from the voltage of the battery. But i hate writing it out cause the formula then looks like E = 1/2Cdv^2, and since high school i kept seeing “d” as for distance. This then gets added to other equations like capacitor current (i = CV/t) into i = cdv/dt. It gets so frustrating.

  • @sajidrafique375
    @sajidrafique375 Год назад

    If you integrate Vdq from 0 to Q and replace dq by Cdv , you get 1/2CV^2 and then 1/2QV follows also

  • @aryanzee3072
    @aryanzee3072 3 года назад +2

    During charging ,Is all the charges moved through the potential of V volt ?Thus we write energy giving to capacitor is QV.

    • @gamingwithbayezid4182
      @gamingwithbayezid4182 2 года назад

      I have the same problem .Please answer this question.🙏🙏🙏🙏

  • @armandrachelle9188
    @armandrachelle9188 2 года назад

    Dude !!

  • @syednawaz8945
    @syednawaz8945 6 лет назад +37

    YOUR VIDEOS SOUND LIKE A RAP IN PHYSICS!!!!!!!!!!!!!!!

  • @leenmaher2641
    @leenmaher2641 5 лет назад

    AMAZING video
    The ohhhhhhh was funny lol

  • @KalaniPananwala
    @KalaniPananwala 6 лет назад +1

    this is very helpful :) and interesting to hear. it was like listening to a rap song. :D