A quick question about current loops

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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?
 

Answers and Replies

  • #2
Meir Achuz
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On the axis, it is fairly simple.
Off axis, you need a Legendre polynomial expansion of the magnetic scalar potential.
 

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