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Electric field/Equipotentials

  1. Nov 2, 2009 #1
    1. The problem statement, all variables and given/known data
    Find the points where the equipotential line is tangent to the thick black line


    2. Relevant equations



    3. The attempt at a solution

    I thought that it was A, G and K, because there, the electric field is horizontal and thus perpendicular to the black line and electric field is always perpendicular to equipotential line. However, I am getting the answer wrong.

    How do I approach this problem?
     
  2. jcsd
  3. Nov 2, 2009 #2
    A part of the problem is missing. A diagram most likely.
     
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