1. b) In a coaxial cable, a long solid cylindrical conductor with radius R1 is supported by insulating, nonmagnetic disks on the axis of a thin-walled hollow conducting tube with inner radius R2. The inner and outer conductors carry equal currents I, but in opposite directions. Can one use Ampere's Law to nd r the magnetic eld as a function of g - - - the distance r from the center. due to this conguration of currents, or 2R2; 2R5: should one use the Biot-Savart Law? i. _ _ _ Please explain. Three different loops of wire - marked A, B, or C - are placed in between the conductors as shown, with the magnetic field coming out of the page in that region. Rank the magnetic ux through the three loops from greatest to least. Please explain your reasoning. (Please note loops A and C are the same size.)