Question

A conductor ABCDEF, with each side of length L, is bent as shown. It is carrying a current I in a uniform magnetic induction (field) B, parallel to the positive y-direction. The force experienced by the wire is 

(a) BIL in the positive y-direction 

(b) BIL in the positive z-direction 

(c) 3BIL 

(d) zero

Answer 1

Correct Answer is a) BIL in the positive y-direction

The force on BC and DE are equal and opposite, and cancel out. The force on CD is BIL.