Ampere's Law Worksheet, Part 2 A coaxial cable consists of a solid inner conductor of radius a, surrounded by a concentric cylindrical tube of inner radius b and outer radius c. The conductors carry equal and opposite currents In distributed uniformly across their cross- sections. Determine the magnetic field at a distance / from the axis for the following ranges of radii. On the figures below, draw the Amperian loop you use in each case. b C (a) For region r c (e) Plot your answers for the magnitude of B above on a graph below. Label your vertical axis or you will lose points