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Equation for magnetic moment, E-field and B-field

  1. Aug 6, 2007 #1

    When a charge/current moves in a closed loop, a magnetic moment is generated.
    Is there any formula for connecting the magnetic moment to E-field and B-field?

  2. jcsd
  3. Aug 6, 2007 #2

    Meir Achuz

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    A magnetic moment m (a vector) produces a magnetic field given by
    B=[3(m.r)r/r^5-m/r^3] plus a delta function if r-->0.
    The r in the numerators are vectors and . means the dot product.
    There is no E field produced.
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