# A square filamentary differential current loop, d L on a side, is centered at the origin in the z… 1 answer below »

A square filamentary differential current loop, d L on a side, is centered at the origin in the z = 0 plane in free space. The current I flows generally in the aφ direction. (a) Assuming that r >> d L, and following a method similar to that in Section 4.7, show that

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