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Torque and magnetic moment

  1. Nov 15, 2007 #1
    when we write [itex] \vec \tau=[\vec \mu, \vec B][/itex]
    what is the point or the line about which we are calcuating the torque
    Also what is the magnetic moment's expression for a surface current and volume current distribution?
  2. jcsd
  3. Nov 16, 2007 #2

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    The moment of magnetic dipole is independent of the origin. The torque is a pure couple and so it too is independent of the choice of origin.
    Last edited: Nov 16, 2007
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