Question

1) In order to have maximum non-zero torque on a loop of current, which of the following configurations works best?
The plane of the loop makes an angle of 45^° with respect to the magnetic field.
The plane of the loop is perpendicular to the magnetic field.
The plane of the loop is parallel to the magnetic field.
The plane of the loop makes an angle of either 30^° or 60^° with respect to the magnetic field.

2)

The magnetic moment μ_B of a current loop is equal to
NIA
IA×B
NIABsinθ
IA

Answer 1

This question is based on the concept of

1. Torque on a loop of current

2. Magnetic moment of current loop

The detailed solution is described below

THANKS