4. (2 PUNTOS)Inductance of coaxial cables: A coaxial cable as used in TV antennas has an inner conductor which is 0.5 mm in diameter and an outer conductor 5 mm in diameter. The outer conductor is a very thin shell. • Calculate the total inductance per unit length of the cable. • What are the internal and external inductances per unit length? • What is the total inductance per unit length if you assume the inner conductor to be a very thin shell with outer diameter 0.5 mm instead of a solid conductor?