Electric field definition | Electric charge, field, and potential | Physics | Khan Academy

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  • Опубликовано: 26 дек 2024

Комментарии • 199

  • @fahreenlalani2100
    @fahreenlalani2100 7 лет назад +357

    whoever this narrator is is solid gold! You make things easier and easy to follow. Thank you!!!!!

  • @ujjwalgautam6873
    @ujjwalgautam6873 6 лет назад +106

    The guy is really good at explaining.

  • @thebluearmy7795
    @thebluearmy7795 4 года назад +55

    I couldn't understand the concept until this video, man deserves a raise

  • @zalasyu
    @zalasyu 7 лет назад +57

    Totally got it after watching this video. I didn't quite understand reading from my textbook or viewing other info. videos. Excellent work!!! Please keep it up!

  • @dominikesegovic1313
    @dominikesegovic1313 5 лет назад +71

    Great explanation. An excellent example of a 10-15 min video explaining physical concepts - laid back attitude, a short historical background of the problem, repeating the most important ideas multiple times and keeping it to the point.

  • @muheeproductions7876
    @muheeproductions7876 6 лет назад +22

    khan academy is the best education channel in RUclips

  • @phillwithskill1364
    @phillwithskill1364 4 года назад +23

    This video demonstrates the value of philosophy. Logical-philosophical thinking can help solve some of the biggest problems in science. The idea of an electric field is a great example of philosophical abductive reasoning or "inference to the best explanation". (1) We observed the phenomena of charges repelling each other. (2) We asked "How do charges exert a force on each other without coming in contact?" (3) We developed a hypothesis, "electric fields", which best explained the phenomena we observed. This hypothesis explains the phenomena well and works out with the math better than other possible hypotheses. As such, the electric field hypothesis will tentatively be thought of as "real" until something else explains the data within greater explanatory scope, explanatory power, and is less ad-hoc, etc.

  • @kjell5352
    @kjell5352 3 года назад +2

    Hallelujah. Watching this to help with secondary school physics in Estonia. I actually feel like I understand this better now.

  • @bhuvi441
    @bhuvi441 7 лет назад +28

    Really loved the definition of electric field @9:00 ! Thank you so much :)

  • @mariamel-nazer9456
    @mariamel-nazer9456 3 года назад +8

    I have a crush on your understanding of physics and your very facile way of explaining it. This made my day, it made me feel like there's still hope for the complex concepts I abhorred as a highschooler(and consequently dropped). Thank you so much for your hard work!

  • @noor-qq4zc
    @noor-qq4zc 9 месяцев назад +2

    this narrator is so impressive, every lesson he gives is super easy to follow and understand, thank you sincerely

  • @lradmclovin9
    @lradmclovin9 6 лет назад +17

    Bless you Khan Academy

  • @eshwarray3993
    @eshwarray3993 5 лет назад +5

    Excellent. You have not thrown some formulas on is,but you have explained how these formulas came up. Thank you very much

    • @dhanavathygRaja
      @dhanavathygRaja 4 года назад

      Eshwar Ray
      That's how Khan academy makes it

  • @malikkhan_01
    @malikkhan_01 Год назад +3

    the narrator is the best ever

  • @daisy-fb5jc
    @daisy-fb5jc 5 лет назад +8

    I have to watch this a couple times throughout my semester, it is just so damn helpful!!!

  • @oi1e319
    @oi1e319 4 года назад +2

    My guy I love you because I’ve been arguing with my teacher for 2 hours because he didn’t get my question and on my way home I watched your video then now I absolutely get the topic now

  • @feelingzhakkaas
    @feelingzhakkaas 3 года назад +2

    excellent explanation in very simple manner.............outstanding ... god bless you sir.

  • @omargrisha6019
    @omargrisha6019 3 года назад +1

    Best one explaining the concept of electric field

  • @Mr2Xri
    @Mr2Xri 3 года назад +2

    The best amazing explanation about electric field that I have ever seen!

  • @user-xb5xn6dg1x
    @user-xb5xn6dg1x 5 лет назад +7

    I like the graphics and it's really easy to understand :D

  • @rrio7171
    @rrio7171 2 года назад +1

    I have no physic background at all , but this short video helped me understand some important concept . Now I could much better understand quantum field , magnetic field and lots of other fields !

  • @alhassanmohammed2721
    @alhassanmohammed2721 5 лет назад +2

    wow wow wow how good i now understand ..... thanks a lot

  • @blchitu8535
    @blchitu8535 7 лет назад +2

    Please do more , you deserve more subscriber's this world need guys like you

  • @Jugolbrazowy
    @Jugolbrazowy 5 лет назад +4

    This is gold, thank you.

  • @mithilpranavr.s5123
    @mithilpranavr.s5123 4 года назад +2

    Wow science is very very interesting😍😍

  • @nytsang5247
    @nytsang5247 3 года назад +1

    You just make it clear. Thank you!!

  • @rustamisakov4706
    @rustamisakov4706 Год назад +1

    too good lessons thanks

  • @qannayuri
    @qannayuri 3 года назад +25

    "Are we just making up stories to make ourselves feel better here?"
    HAHAHAHAHA

  • @medic8038
    @medic8038 4 года назад +3

    how could i thank you...
    you are amazing ,and you explain it in a very easy way

  • @projjalm
    @projjalm 3 года назад +1

    This was super golden explanation

  • @xenonn5499
    @xenonn5499 8 месяцев назад

    You literally hooked me the entire video and somehow answered every single question that came into my mind , If I got an A* I will be sure to write here , THANK YOUUUU

  • @khashiaawaheed7651
    @khashiaawaheed7651 5 лет назад +3

    Superb explanation..Understood really well and helped me in making notes!

  • @richecardealexandre1339
    @richecardealexandre1339 4 года назад +1

    super clear clarified this section in the book for me thanks.

  • @emlynn4070
    @emlynn4070 2 года назад +1

    Amazing. Physics is beautiful

  • @TessaJett
    @TessaJett Год назад

    I have learnt a lesson of an hour by 13 minutes. Thanks dude.

  • @omargrisha6019
    @omargrisha6019 3 года назад +1

    This guy is a legend

  • @joshgeorge5921
    @joshgeorge5921 3 года назад +1

    Thank you! Honestly you could not have done a better job explaining this .

  • @premedmelody
    @premedmelody 10 месяцев назад

    So clear - love this educator

  • @ShrirangChandankhede
    @ShrirangChandankhede 3 года назад +1

    perfect and lucid lecture..thnx

  • @parinita1031
    @parinita1031 5 лет назад +2

    Well explained in detail .thank you

  • @shieldcracker
    @shieldcracker 2 года назад +1

    Brilliant and clear. Although one cannot help questionioning if the concept of fields used to explain force at a distance is just as arbitrary as the north and south poles definitions of a magnet, or wether ther are positive or negative charge carriers in electric current....

  • @stellahstars5584
    @stellahstars5584 3 года назад +2

    Very well explained, I have been struggling with this topic for 2 years now. Thank you so much. 🙏🙏🙏

  • @UsamaKhan-tu7zi
    @UsamaKhan-tu7zi 7 лет назад +1

    That's more liking.......u make it really easy for me....

  • @MrRaubtierify1998
    @MrRaubtierify1998 4 года назад +2

    muy bien explicado! gracias!

  • @haroldh6678
    @haroldh6678 7 лет назад +6

    Very good. Excellent.

  • @hit_edits18
    @hit_edits18 3 года назад +1

    one must learn from exclusive videos of this channel if one wants to really explore something new.

  • @sababatamanna2117
    @sababatamanna2117 5 лет назад +2

    Nicely explained! Thanks!

  • @fatmacutie8176
    @fatmacutie8176 7 лет назад +2

    😍😍😍loved the explanation

  • @nguyengiang7489
    @nguyengiang7489 Год назад

    Wow i love this explanation! Thank you!

  • @cj75555
    @cj75555 5 лет назад +3

    very well explained!

  • @JawHacks
    @JawHacks 5 лет назад +1

    absolutely fantastic video. thank you.

  • @jianmao2343
    @jianmao2343 4 года назад +4

    thanks very much, my professor can only teach us with phisics language which we can not understand.

  • @nodistractions4106
    @nodistractions4106 5 лет назад +3

    damn, this guy's good

  • @MrPyro-np1ht
    @MrPyro-np1ht 3 года назад +2

    Question, @10:50 you reexplained what an electric field is saying its Force per Coulomb and that ratio stays the same no matter the charge there but isn't that misleading because the stronger the charge there the more force you feel? If I'm wrong can you please explain why?

    • @noahwiliams7214
      @noahwiliams7214 2 года назад

      The field generated by the first charge is measured in Force PER Coulomb (of the second charge). So yes, if your test charge is larger it will experience a larger force.

  • @iriskimm325
    @iriskimm325 4 месяца назад

    Best explanation regrading electric fields - from a physics C folk

  • @sivaforutube
    @sivaforutube 3 года назад +1

    2:41, ok, but what is an electric field? And what is Q1? Is it a particle? Matter? or Wave? What is a charge?

  • @childofconvienience
    @childofconvienience 3 года назад +1

    This is brilliant

  • @anasmoustafa7286
    @anasmoustafa7286 2 года назад

    Astonishing explanation

  • @francisdeleon4672
    @francisdeleon4672 3 года назад

    very clear explanation

  • @MilliamKirahmuyawa-kk2lj
    @MilliamKirahmuyawa-kk2lj Год назад

    Understanding clearly 👍👍

  • @MARIA-ym7kg
    @MARIA-ym7kg 2 года назад +1

    absolutely incredible.

  • @chienbin4813
    @chienbin4813 11 месяцев назад

    nice, that's very helpful for me

  • @stanleychua1172
    @stanleychua1172 6 лет назад +7

    so particles don't exert forces on other particles? they only create electric fields that causes forces on other particles?

    • @copterinx0468
      @copterinx0468 4 года назад +1

      You could look at it as they do exert forces on each other...via electric fields. Same with physically pushing stuff. When you "touch" something, the atoms aren't actually touching each other; rather, the electric forces repel your hand. Most of any solid, liquid, or gas is composed of empty space.

    • @sridharchitta7321
      @sridharchitta7321 4 года назад +1

      What is the electric field? What is its nature?
      The classical electric and magnetic fields were first depicted as lines of force by Michael Faraday and later changed to tubes of force by Maxwell in the region surrounding stationary and moving charges.
      The abstract Electric and magnetic fields are suitably depicted using vector arrows at points in space.
      In order to precisely explain the physics of electricity and magnetism, it is useful to attribute a few properties to fields, which are abstract in the sense that they are not visible nor tangible but they produce observable effects in their interactions with matter and its constituent atoms and the charges which constitute them; one example is that they penetrate through matter.
      There are several more effects and properties of charges and fields which can explain their behavior in circuits.
      Electrostatics and circuits belong to one science and not two, that of electricity and magnetism. To know how they are unified visit this link
      matterandinteractions.org/articles-talks/ and view the article 'A unified treatment of electrostatics and circuits. B. Sherwood and R. Chabay, unpublished. (1999)'
      pdf.
      For a live demonstration of surface charge and its effects in circuits visit
      ruclips.net/video/U7RLg-691eQ/видео.html
      For a detailed discussion of surface charge, coulomb's law, electric fields, fields of dipoles and other charge configurations, parallel plates, capacitance, currents, conservation of charge, conservation of current, superposition of fields, superposition of potential, simple dc circuit, magnetic fields, magnetic fields of a current element, straight wire, current loop, solenoids, biot-savart law, voltage, voltage source, difference between e.m.f. and potential difference, ideal voltage sources, resistors, how current branches in a parallel circuit, capacitors, inductors, faraday's law, inductance, ac circuits, transmission lines, motors, generators, p-n junction diodes, electromagnetic waves, antennas and radiation, see "Electric and Magnetic Interactions" by Chabay and Sherwood
      www.matterandinteractions.org
      or
      Fundamentals of electric theory and circuits by Sridhar Chitta
      www.wileyindia.com/fundamentals-of-electric-theory-and-circuits.html
      There is a "look inside" feature in the amazon.com webpage of the book "Fundamentals of electric theory and circuits" by Sridhar Chitta with a few pages of Chapter 1 which may be viewed and also which you may swipe left or press < icon to view the foreword, preface and Table of Contents. The contents of the above book by Sridhar Chitta, make a distinct unified approach to electrostatics and a few advanced circuits like coupling signals to amplifiers, lending precision and clarity to the topics which is not found in most text books.
      The book comes alongwith a CD with animated power point presentations for all chapters and voltage regulator, RC phase shift oscillators and differential amplifiers included additionally.
      For a lecture by Prof Ruth Chabay on surface charge in a simple dc circuit visit
      ruclips.net/video/-7W294N_Hkk/видео.html

  • @Ratatatouille
    @Ratatatouille Год назад

    Thanks, this is so clean.

  • @Sanjeevkumar-hz1td
    @Sanjeevkumar-hz1td 6 лет назад +1

    Just, hats off to you!!!

  • @tenkhosiii
    @tenkhosiii 2 года назад

    Thank you, for this.

  • @sarah_bk
    @sarah_bk Год назад

    amazing man!
    😊

  • @Phymacss
    @Phymacss 2 года назад

    Thank youuuuu!😊

  • @barbarahawksley7229
    @barbarahawksley7229 2 года назад

    Thank you so much for this!

  • @gabrieljovanbuenaventura9688
    @gabrieljovanbuenaventura9688 2 года назад

    ty Mr. Lightning McQueen for this wonderful lecture

  • @howonha6109
    @howonha6109 7 лет назад +4

    Wow Great explaination. for me, Physics like Electrics, the most important thing is to exactly what the phyical meaning in definition

  • @JenniferPChung
    @JenniferPChung Год назад +1

    Thank you for breaking that down so clearly and repeating the important concepts throughout the whole video.

  • @lilexz
    @lilexz Год назад +1

    ingfo yg udh tugas dr pa tatang

  • @mandihope1
    @mandihope1 2 года назад

    2:13 never, in my entire life, have I seen someone draw an arrow like that and it’s all I can think about now.

  • @jagadhariseno
    @jagadhariseno 5 лет назад +2

    Thank you for this great video.

  • @peterliman6968
    @peterliman6968 8 месяцев назад

    This guy is great merde

  • @Byynx
    @Byynx 2 года назад

    I like this video one of the best but after countless videos i understand now that we don't know what charges, electric fields and forces are.

  • @aberronxo77
    @aberronxo77 2 года назад

    great video!

  • @texastexas4541
    @texastexas4541 2 года назад +1

    What is the difference between mean electric vector and mean dipole moment?

  • @MrMarkgyuro
    @MrMarkgyuro 4 года назад

    best explainer!

  • @razedwolf2773
    @razedwolf2773 2 года назад

    -10 hours before my finals. I'm watching this at 1.5x speed. The vid is a life saver

  • @tobyzxcd
    @tobyzxcd 4 года назад +3

    0:35 "there are no strings here" *11 dimensions* "allow us to introduce ourselves"

    • @Safwan.Hossain
      @Safwan.Hossain 3 года назад

      @@pagladashu7390 Don't bother unless you really wanna confuse yourself. It's related to String Theory, aka the field of physics that requires the most amount of work for the least amount of practical results. Beautiful stuff though.

  • @rpsahi7277
    @rpsahi7277 9 месяцев назад

    Really good

  • @ugbevajoshua8805
    @ugbevajoshua8805 2 года назад

    Thanks....

  • @NadirIdrioui
    @NadirIdrioui 3 года назад

    thanks boss!

  • @utkarshverma1
    @utkarshverma1 6 лет назад +1

    This might be off topic, but which software does he use? For writing purposes.

  • @hommhommhomm
    @hommhommhomm Год назад

    Thanks

  • @taihatranduc8613
    @taihatranduc8613 4 года назад

    so good....

  • @Hemanthdev10
    @Hemanthdev10 Год назад

    Goat explanation

  • @iffatzahra3624
    @iffatzahra3624 3 года назад +3

    But this field did not solved the problem of "how force transfered ?",

    • @noahwiliams7214
      @noahwiliams7214 2 года назад +1

      By Exchange of force mediator particles. In this case, photons

  • @shamirajsurvase8032
    @shamirajsurvase8032 Год назад

    I still have a question that about how do charges produce electric field for opposite charges. You did explain how like charges repel each other but what about unlike charges. Do the charges produce different electric field for like and unlike charges?

  • @zarifchowdhury1468
    @zarifchowdhury1468 3 года назад +1

    you drew a non-uniform electric field. But the formula you used is for a uniform field. For non uniform it's kM/r^2

  • @narasimhank.b5432
    @narasimhank.b5432 4 года назад

    unbelievable moment

  • @quantumobject3815
    @quantumobject3815 3 года назад +1

    So what exactly is the Electric charges

  • @akshaybkn
    @akshaybkn 5 лет назад

    Nice explaination

  • @marvhartigan3677
    @marvhartigan3677 3 года назад

    My man!

  • @benhardsim8629
    @benhardsim8629 5 лет назад

    really great

  • @carlosvazquez603
    @carlosvazquez603 4 года назад

    Ab-so-lu-te-ly brillliant explanation

  • @mr.electro4674
    @mr.electro4674 2 года назад

    0:36 String Theorists: I beg to differ

  • @duhom1665
    @duhom1665 3 года назад +3

    theres still a question in my mind that is, what exactly will be the electric field without the participation of a positive test charge??...this q has been disturbing my mind...

    • @faris3061
      @faris3061 3 года назад +2

      The electric field has its own existence and is present even if there is no additional charge to experience the force.

    • @duhom1665
      @duhom1665 2 года назад

      @@faris3061 👍👍