# Physics

posted by
**sandhu** on
.

A coaxial transmission line has a solid inner conductor of radius a and a thin-walled outer conductor of radius b. The medium between the conductors has permeability (Mu)0. Find the inductance per meter of length of the line (a) if all current of the inner conductor is on its surface (at radius a) (actually a thin layer of negligible thickness) and (b) if the current of the inner conductor is uniformly distributed throughout its cross-sectional area, that is if the internal inductance of the inner conductor is taken into account.