A long, straight, hollow conductor (tube) carrying a current has two sections A and C of
Channel: Doubtnut
Date: 26/07/2020

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_1, B_2 and B_3`. Then,