521. Problem 38.15 (RHK) A long coaxial cable consists of two concentric
cylindrical conductors with radii a and b, where
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Solution Click For PDF Version A long coaxial cable consists of two concentric cylindrical conductors with
radii a and b, where
The magnetic field inside the coaxial cable will depend on the distance from
the central axis. By using Ampere’s law, we note that the magnetic field at a
distance r from the axis of central cable when a current
We consider a Gaussian surface, a rectangle of length l and width
As the inductance is flux per unit current, the inductance of a length l of the coaxial cable will therefore be |