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Homework Help: Force between parallel plates in a capacitor

  1. Feb 13, 2009 #1
    1. The problem statement, all variables and given/known data

    Hey guys.
    So, I got this problem.
    According to their hint I'm suppose to calculate the work of moving one of the plates and from their, get to the force.
    I don't have a clue how to do that. I can't find a single formula that can help with that.
    Can I please have some help...?:smile:


    2. Relevant equations

    3. The attempt at a solution

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  2. jcsd
  3. Feb 13, 2009 #2


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    Homework Helper

    Here. You can watch the first part of this lecture:

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