F A long straight hollow conductor tube carrying a current

Last updated: 5/30/2023

F A long straight hollow conductor tube carrying a current has two sections A and C of unequal cross sections joined by a conical section B 1 2 and 3 are points on a line parallel to the axis of the conductor The magnetic fields at 1 2 and 3 have magnitudes B B and B respectively then B a B B B b B B B3 2 c B B B3 d B cannot be found unless the dimensions of the