(Solved): Coaxial Cable. A solid conductor with radius a is supported by insulating disks on the axis of a co ...

Coaxial Cable. A solid conductor with radius

is supported by insulating disks on the axis of a conducting tube with inner radius

and outer radius

in the following figure. The central conductor and tube carry equal currents

in opposite directions. The currents are distributed uniformly over the cross sections of each conductor. Part A Derive an expression for the magnitude of the magnetic field at points outside the central, solid conductor but inside the tube ( a < r < b ). Express your answer in terms of the variables I , r , and magnetic constant \mu 0 . Part B Derive an expression for the magnitude of the magnetic field at points outside the central, solid conductor but inside the tube

Express your answer in terms of the variables I , r, and magnetic constant \mu 0 .