Problem 5.5 A current I flows down a wire of radius a. (a) If it is uniformly distributed over the surface, what is the surface current den- sity 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(s)?

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Problem 5.5 A current I flows down a wire of radius a.
(a) If it is uniformly distributed over the surface, what is the surface current den-
sity 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(s)?
Transcribed Image Text:Problem 5.5 A current I flows down a wire of radius a. (a) If it is uniformly distributed over the surface, what is the surface current den- sity 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(s)?
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