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Homework Help: Why does the charge uniformly distributed on the surface of the sphere only?

  1. Dec 11, 2009 #1
    1. A solid conducting sphere is given a positive charge Q. Why is the charge uniformly distributed on the surface of the sphere only?



    2. Relevant equations



    3. I know there are electron clous where electrons hang out, but what happen when the sphere is given a postive charge? I don't think protons comes to the surface or anything like that...
     
  2. jcsd
  3. Dec 11, 2009 #2
    The electric field inside a conductor must be zero, so there can be no charge inside the sphere. The remaining charges array themselves on the surface until there is no field inside the sphere, and the only way that can work is if they are concentrated uniformly on that surface.
     
  4. Dec 11, 2009 #3
    But why aren't the charges uniformly distributed throughout the sphere?
     
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