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Equipotential of a conductor

  1. Oct 27, 2012 #1
    I understand that if two points are inside a conductor they're at the same potential. I also understand that if two points lie on the surface of the conductor they're at the same potential.

    If point a lies on the surface of a conductor and point b lies inside is there still zero potential difference between a and b?

    If so, does that mean the electric field at the surface of a conductor is also zero?
     
  2. jcsd
  3. Oct 27, 2012 #2

    Born2bwire

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    For you first point, yes. The entire volume of a conductor is equipotential. However, that does not mean that the electric field at the surface is zero. The tangential electric field is zero, but the normal electric field is non-zero. The non-zero normal field is a result of the charge that builds up on the surface of the conductor in response to the applied electric field.
     
  4. Oct 28, 2012 #3
    electric field inside the conductor is zero in static situation.
     
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