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Magnetic field outside a conductor

  1. Apr 14, 2010 #1
    Why is the magnetic field outside a conductor zero?
  2. jcsd
  3. Apr 14, 2010 #2
    Where did you read that it is such?

    A copper wire with a current going through it is a conductor, but surely generates a magnetic field.

    Maybe you mean a conductor in equilibrium, but still... An iron magnet is a conductor.
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