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Electrostatic potential independent of distance?

  1. Feb 9, 2010 #1
    Say I have a packet of electrons just sitting there, before they repel each other, what is their potential energy?

    I have no idea of how to calculate their potential energy since at r = 0 , U = infinity, which is not helpful since my problem requires U to be finite but the only way I know of that being true is that r does not = 0.

    Any way of calculating PE without distance?
  2. jcsd
  3. Feb 10, 2010 #2
    hmmmm , I dont think this is possible .. do you have the exact question ?
  4. Feb 10, 2010 #3
    I think it is impossible and so I just forced some boundary conditions. i.e. initial separation is not = 0.
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