9.2a Emf and Potential Difference | AS Current of Electricity | Cambridge A Level Physics

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  • เผยแพร่เมื่อ 27 ธ.ค. 2024

ความคิดเห็น • 15

  • @maanyajayaram6184
    @maanyajayaram6184 2 ปีที่แล้ว +17

    beautiful explanation , this is the first time ive actually understood electricity after many tries and teachers.

  • @voyage-of-tranquility
    @voyage-of-tranquility 10 หลายเดือนก่อน +4

    true representation of how teachers are genuinely meant to be. breathtaking.

  • @queenswand
    @queenswand 23 วันที่ผ่านมา

    BEST PHYSICS TEACHER EVER. SO GRATEFUL FOR YOU, GOD BLESS!! ❤️

  • @elhaambasheerch7058
    @elhaambasheerch7058 2 ปีที่แล้ว +13

    I've been struggling with electricity since my OL days, thanks for these
    brilliant series.

  • @BOBO_4869
    @BOBO_4869 11 หลายเดือนก่อน

    I've always been struggling with this concept in particular huh. Finally understood

  • @kunangichan142
    @kunangichan142 ปีที่แล้ว +1

    In 14:19 what does "to move it" refer to? is it an electron? Thank you

    • @BOBO_4869
      @BOBO_4869 7 หลายเดือนก่อน

      Probably "a single charge", equivalent to 6.25 x 10^18 electrons

  • @adnansakeeb739
    @adnansakeeb739 2 ปีที่แล้ว +1

    9:06 why does the charge carrier loss all its energy by the time it gets to the negative terminal? or to put it in another way why do the resistors always take away ALL of the charge's energy why can't the charge keep like 1 J to itself after passing all resistors? :/

    • @kademviren
      @kademviren ปีที่แล้ว +5

      components are greedy, for example if you provide a high voltage to a small bulb, its going to take more than enough energy and will explode rather than getting enough and leaving the rest

  • @waleedbinqasim4195
    @waleedbinqasim4195 3 ปีที่แล้ว +1

    @16.32 are u considering each resistor to be potentiometre?

    • @ETphysics
      @ETphysics  3 ปีที่แล้ว +3

      A potentiometer IS also considered to be a kind of resistor tho?

    • @waleedbinqasim4195
      @waleedbinqasim4195 3 ปีที่แล้ว +1

      Every potentiometre is a resistor but every resistor is not a potentiometre

    • @ETphysics
      @ETphysics  3 ปีที่แล้ว +3

      Yes, we give them different names for different forms of resistance! But how current and pd behaves INSIDE these resistances are the same, if the dimensions are uniform (based on R = ρL/A)
      So at the end of the day, I can treat a resistor as a potentiometer (or resistance wire)