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General function for E Field for point charge

  1. Feb 5, 2012 #1
    1. The problem statement, all variables and given/known data

    Write down a general function where E=f(r,D) for sphere (D=3), (where D is a dimensionality parameter, which describes how many orthogonal directions x,y,z the field drops off from its maximum).


    2. Relevant equations



    3. The attempt at a solution

    E=f(r,3)

    Am I correct in thinking I place the 3 where I have, and retain the r as an r.
    Then insert some function where the f is located?
     
    Last edited: Feb 5, 2012
  2. jcsd
  3. Feb 6, 2012 #2
    anyone have any ideas?
     
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