Answer to Question #282931 in Electricity and Magnetism for BIGIRMANA Elie

Question

A long straight copper wire of radius R carries a free current I. The current is distributed uniformly over the cross-section of the wire. Find the magnetizing field H outside and inside the wire

Answer 1

$H_1=0,$

$H_2=\frac B{\mu_0}=\frac{\mu I}{2\pi R}.$