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Homework Help: Calculating coulombs law in a capacitor?

  1. Sep 13, 2010 #1
    1. The problem statement, all variables and given/known data

    Each capacitor has a plate area of 5 inches, with a distance between the plates of 10mm. The capacitor has a total Q of .002 Coulombs.



    2. Relevant equations

    Coulombs law F=Ke X q1q2/r squared

    3. The attempt at a solution

    I do not know how to calculate coulombs law for a capacitor since coulombs law only describes the force between 2 points. Do I need to calculate the charge distribution first? How do I do that?
     
  2. jcsd
  3. Sep 13, 2010 #2
    Yeah, you can't use coulomb's law. You should find the electric field then use the fact that F=qE.
     
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