Question: A coaxial cable consists of two very long cylindrical tubes, separated by linear insulating material of magnetic susceptibility Xm. A current I flows down the

A coaxial cable consists of two very long cylindrical tubes, separated by linear insulating material of magnetic susceptibility Xm. 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. 6.24). Find 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.

A coaxial cable consists of two very long cylindrical tubes, separated by

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