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Resistor cube

  1. Apr 22, 2012 #1
    1. The problem statement, all variables and given/known data

    I am looking at the classic resistor cube problem-the one in which there is a cube with resistors all of the same value on each side. Particularily I am having trouble understanding the symmetry argument for the case in which the current enters and exits across the diagonal of a face. I realize that two of the sides "by symmetry" are going to be at the same potential. I don't undertand what is meant by "by symmetry." it would be extremely helpful if someone could explain that to me. Thanks.

    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
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