A conducting circular loop of radius carries a constant current

PHYSICS · Single correct · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism

Problem

A conducting circular loop of radius

r

carries a constant current

i

. It is placed in a uniform magnetic field

\vec{B}_0

such that

\vec{B}_0

is perpendicular to the plane of the loop. The magnetic force acting on the loop is (1)

ir B_0

(2)

2\pi ir B_0

(3) zero (4)

\pi ir B_0