Question

A long horizontal rigidly supported wire

carries a current of 100 . Directly above it

and parallel to it is a fine wire that carries a

current of 200 and weighs 0.05 −1. How

far above the wire should the second wire be

kept to support it by magnetic repulsion?​

Answer 1

long horizontal rigidly supported wire carries a current is = 96 A. Directly above it and parallel to it at a distance, another wire of 0.144 N weight per metre carrying a current ib = 24 A, in a direction opposite to that of ia. If the upper wire is to float in air due to magnetic repulsion, then its distance (in mm) from the lower wire is: 3.2

Answer 2

Explanation:

class 12 , moving charges and magnetism ,application : force between 2 straight parallel conductors