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A quick question about current loops

  1. Oct 14, 2007 #1
    Applying the Biot-Savart eq'n for inside a current loop is pretty simple to find the magnetic field inside a current loop.

    But how would one find the magnetic field outside of one?
     
  2. jcsd
  3. Oct 16, 2007 #2

    clem

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    On the axis, it is fairly simple.
    Off axis, you need a Legendre polynomial expansion of the magnetic scalar potential.
     
  4. Oct 19, 2007 #3

    robphy

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