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Homework Help: Wires and potential difference

  1. Mar 16, 2010 #1
    Recently in physics I've learned that equipotential surfaces are always conductors in electrostatic equilibrium.. so no moving charges. I'm a little confused, then, of how a wire carrying current is considered an equipotential? If charges are moving how can the potential be constant?
     
  2. jcsd
  3. Mar 16, 2010 #2

    rl.bhat

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    The charges always move from higher potential to the lower potential. On the equipotential surface, at every point the potential is the same. so the charges are not moving.
    In a wire current flows only when there is a potential difference at two ends of the wire.
     
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