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Homework Help: Electric field from a wire with a stationary current

  1. Jun 16, 2008 #1
    1. The problem statement, all variables and given/known data
    Hi all.

    I I have a wire, and a stationary current I runs through it, then an electric field E1 runs inside the wire in the same direction as the current.

    If we look at a point P a vertical distance s from the wire, does P get affected by an electric field from the wire? If yes, is this the same field as when the wire just has a uniform charge spread over it?
     
  2. jcsd
  3. Jun 16, 2008 #2
    if the current is constant, i don't think there will be any electric field outside of the wire. You'll have a constant magnetic field (constant - so it doesn't generate an electric field)... and because the wire is still electrically neutral from an outside observer - there will be no E-field.
     
  4. Jun 17, 2008 #3
    That makes sence, thanks.
     
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