The gure shows a crosssectional View of a coaxial ca ble. The eenter conductor is surrounded by a rubber layer... an outer conductor1 and another rubber layer. The current in the inner conductor is I1 = as A out of the page... the current in the enter conductor is 1'2 = 31] A into the page... and d = LU 111111. {a} Determine the magnitude and direction of the magnetic eld at point a. {b} Determine the magnitude and direction of the magnetic eld at point b. {c} Note that this part is unrelated to parts a. and b. A cylinder of radius R has a current owing along its axis with current density of J = hrg where b is a constant and r is the distance from the axis. \"mat is the total current owing in the cylinder