Question

A current loop in a magnetic field ____________.

Options

• experiences a torque whether the field is uniform or non-uniform in all orientations

• can be in equilibrium in one orientation

• can be in equilibrium in two orientations, both the equilibrium states are unstable

• can be in equilibrium in two orientations, one stable while the other is unstable

Answer 1

A current loop in a magnetic field can be in equilibrium in two orientations, one stable while the other is unstable.

Explanation:

When `theta` = 0° (parallel) it is in stable equilibrium.

When `theta` = 180° (anti-parallel), it is in unstable equilibrium.