Let's apply the torque equation to a circular coil of wire in a magnetic field. The coil has an average radius of 0.0435 m , has 40 turns, and lies in a horizontal plane. It carries a current of 7.25 A in a counterclockwise sense when viewed from above. The coil is in a uniform magnetic field directed toward the right, with magnitude 1.05 T . Find the magnetic moment and the torque on the coil. Which way does the coil tend to rotate

Explanation:

From the question we are told that:

Radius

Number of turns

Current

Magnetic Field

Generally the equation for magnetic moment M is mathematically given by

 Where

Therefore the magnetic moment  is given as

Generally the equation for Torque on the coil T is mathematically given by

Therefore torque on coil T is given a

we need answer choices

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.