A conducting circular loop of radius r carries a constant current I. 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

Question

A conducting circular loop of radius r carries a constant current I. 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) Ir B0 (B) 2 π I r B0 (C) π Ir B0 (D) zero

Tardigrade Admin · Accepted Answer

When a current carrying loop is placed in uniform magnetic field. τ=0 when θ=0, ie, when the plane of the coil is perpendicular to the field.

Q. A conducting circular loop of radius $r$ carries a constant current $I$ . It is placed in a uniform magnetic field $B_{0}$ such that $B_{0}$ is perpendicular to the plane of the loop. The magnetic force acting on the loop is

$I r B_{0}$

$2 π I r B_{0}$

$π I r B_{0}$

zero

When a current carrying loop is placed in uniform magnetic field.
$τ = 0$ when $θ = 0$ , ie, when the plane of the coil is perpendicular to the field.

Q. A conducting circular loop of radius r carries a constant current I. 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

IrB0​

2πIrB0​

πIrB0​