A long transmission line consists of two identical wires embedded in a medium with permittivity and

Question:

A long transmission line consists of two identical wires embedded in a medium with permittivity ϵ and permeability μ. Let the wire separation d be large compared to the wire radius a. Calculate the capacitance per unit length C and the inductance per unit length . Confirm the general relation C = μϵ derived in the text.