Q. An irregular closed loop carrying a current has a shape such that the entire loop cannot lie in a single plane. If this is placed in a uniform magnetic field, the force acting on the loop
A) Must be zero
B) Can never be zero
C) May be zero
D) Will be zero only for one particular direction of the magnetic field
Explanation
(a) A closed current carrying loop of any irregular shape and even not lying in a single plane, placed in a uniform magnetic field shall experience no net force. Therefore, force acting on the loop must be zero.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.