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Charge on hollow metal sphere

  1. Jul 13, 2008 #1
    Why does charge given to a hollow metal sphere reside only on its surface?
  2. jcsd
  3. Jul 13, 2008 #2


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    If the sphere is in equilibrium, what can you say about the electric field inside the 'shell' (not the cavity) of the sphere?
  4. Jul 13, 2008 #3
    sry misunderstood ur question
  5. Jul 13, 2008 #4
    use gauss' law to get the answer...
  6. Jul 13, 2008 #5
    Think about what (equal) charges do when you bring them close together.
  7. Jul 13, 2008 #6
    Exactly, this is called the "skin-effect", as the electrons' mutual repulsion will move them away from each other and thus towards the most outer region of the metal.
    A sphere is not necessary; this can easily occur in solid wires.
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