Question: A square loop of side ? lies in the yz plane with its center at the origin. It carries a current I. Find the magnetic

A square loop of side ? lies in the yz plane with its center at the origin. It carries a current I. Find the magnetic field B at any point on the x axis and show from your expression that for x much larger than ?,

Where ? = I?2 is the magnetic moment of the loop.

2 Bx 4

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