A coaxial cable consists of two very long cylindrical tubes, separated by linear insulating material...

Question

A coaxial cable consists of two very long cylindrical tubes, separated by linear insulating material of magnetic susceptibility . A current I flows down the inner conductor and returns along the outer one; in each case, the current distributes itself uniformly over the surface (Fig XXXXXXXXXXFind the magnetic field in the region between the tubes. As a check, calculate the magnetization and the bound currents, and confirm that (together, of course, with the free currents) they generate the correct field.

Robert · Accepted Answer

Solution:- 
As per the given diagram:
Here, two cylindrical tubes are separated by linear insulting material of susceptibility 
mx   Current flows down the inner conductor and return along the outer one. 
To calculate the magnetic field between the tubes first we have to calculate H. 
From integral from of ampere’s law 
.
,

A coaxial cable consists of two very long cylindrical tubes, separated by linear insulating material of magnetic susceptibility . A current I flows down the inner conductor and returns along the outer...

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