Fundamentals of Engineering Electromagnetics 1st Edition by David Cheng

Exercise 56

If the space between the inner and outer conductors of the coaxial structure in problem P.3-29 is free space, find the expression for V ( r ) in the region a r b by solving Laplace's equation. From V ( r ) , obtain the surface charge densities on the conductors and the capacitance per unit length of the structure. Compare your result with Eq. (3-90).