(a) For the coaxial cable of Exercise28.37, derive an expression for the magnitude of the magnetic field at points inside the central solid conductor (r < a). Compare your result when r = a to the results of part (a) of Exercise 2837 at that same point.
(b) For this coaxial cable derive an expression for the field within the tube (b < r < c). Compare your result when r = b to part (a) of Exercise 28.37 at that same point. Compare your result when r = c to part (b) of Exercise 28.37 at that same point.