Question

A constant current i flows in a loop of radius r. It is placed in a uniform magnetic field B₀ such that B₀ is perpendicular to the plane of the loop. The magnetic force acting on the loop is

• A. irB₀
• B. 2π irB₀
• C. zero
• D. π irB₀

Hint:

Uniform magnetic fields produce torque, not net force, on current loops.

Answer 1

The Correct Option is C

For a closed current loop in a uniform magnetic field, net magnetic force is zero though torque may act.