Question

Consider a long straight rod of radius R carrying a constant current I of uniform current density. The material of the rod has a very small susceptibility, so you can use χm = 0.

A straight long rod with radius R and constant current I with uniform current density, it's susceptibility is considered zero, χm = 0.

1)Calculate outside and inside of the rod, the magnetic field.

2)Include both outside and inside. Roughly sketch a graph of radial position versus magnetic field strength.

3)Let's say a metal has a magnetic susceptibility of χm =5.8x10^-1, what will the magnetic field inside and outside of the rod changed compared to the metal of χm = 0? Roughly sketch it.

4)What are the values and directions of the bound surface current bound volume current in this case?

Answer 1