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Homework Help: Electrical Equations

  1. Dec 19, 2005 #1
    Can you please explain me in lamens terms what are these variables names and what they give:
    -
    1c=6.24 * 10^18
    e=1.60 * 10^-19
    Q=Ne
    Fe=KQ1Q2/d^2
    I=Q/T
    1A = 1C/1s
    -
    And How would i do this question with the stuff i have written above this line?
    -
    A current of 0.82 A flows through an electric lamp for 10 min. In that time how much charge passes a given spot in the filament expressed in
    (a)Coulombs
    (b)Electrons
    -
    For (a) i think I need to use 1A = 1C/1s
    So C=A*S
    -C=0.82 A (600s)
    -C=492
    But in the back of my book its -492 explain what i did wrong
    -
    For (b) I think i don't know what to use I'm :surprised
     
    Last edited: Dec 19, 2005
  2. jcsd
  3. Dec 19, 2005 #2

    ranger

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    Gold Member

    Last edited: Dec 19, 2005
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