(6%) Problem 15: An electric current is flowing through a long cylindrical conductor with radius a = 0.85 m. The current density J= 5.5 A/m is uniform in the cylinder. In this problem we consider an imaginary cylinder with radius / around the axis AB. Randomized Variables a = 0.85 m J =5.5 A/m\fA 14% Part (a) When r is less than a, express the current inside the imaginary cylinder in terms of r and J.DA 14% Part (d) When / is greater than a, express the current inside the imaginary cylinder in terms of r, a and J. =D A 14% Part (e) Express the magnitude of the magnetic field, B, at r > a in terms of / and r. Br za