Question: A current I flows down a wire of radius a. (a) If it is uniformly distributed over the surface, what is the surface current density

A current I flows down a wire of radius a.

(a) If it is uniformly distributed over the surface, what is the surface current density K?

(b) If it is distributed in such a way that the volume current density is inversely proportional to the distance from the axis, what is J?

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