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Electrostatic interaction

  1. Sep 2, 2012 #1

    which equation descripts the electrostatic interaction between two non-point (ie. that have dimensions) charged particles?

  2. jcsd
  3. Sep 2, 2012 #2


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    That would be different for every shape! Start with the formula for point charges and integrate over all the infinitesimal charges in the shape. Spheres work out nicely; other shapes do not.
  4. Sep 2, 2012 #3
    Yeah, i want for spheres only, forgot to mention
  5. Sep 5, 2012 #4


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    For spheres, just use the point charge formulas - as if the entire charge was located at the center point. Make a note that you need to work that out for yourself once you take 3D calculus.
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