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Homework Help: Word done by field

  1. Jul 6, 2010 #1
    1. The problem statement, all variables and given/known data
    I built a configuration of charge on an equilateral triangle with side length of 10cm shown
    below. I decided however that I have one to many charges and wish to remove the 5μC charge completely. How much work is done by the field when I remove the charge?

    The triangle has a -5µC up top then a 10µC on bottom left and finally a 5µC on the bottom right. Thanks for any help


    2. Relevant equations



    3. The attempt at a solution

    I have no idea where to begin, thanks for any help.
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Jul 7, 2010 #2
    Do you know the relation between work done and potential ?
    And how to find the potential of a charge at a given distance?
     
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