Question

The magnetic field inside wires

In a regular household wire, current I flows (uniformly!) down a long straight conducting wire of radius R. Assume the metal is a "magnetically linear" material, and find the magnetic field B as a function of distance s from the center of the wire (both inside and outside the wire)
What are all the bound currents in this problem? (Check yourself by verifying that the total bound current is zero)
What can you say about the magnetic field when you take into account susceptibility - consider both Cu wire and Al wire, what happens in both cases? Would it have mattered much if we had treated this problem like a "Chapter 5 problem" and totally neglected the susceptibility of the wire? Would your answer change much if this was a current flowing inside a human body (where the conductive material is basically water)?

Answer 1