A rectangular coil of 200 turns has dimensions and carries a current of

PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

A rectangular coil of 200 turns has dimensions

4\,\text{cm}\times 2\,\text{cm}

and carries a current of

1.5\,\text{A}

. It is placed in a uniform magnetic field of

0.30\,\text{T}

such that the angle between the field and the normal to the coil is

45^{\circ}

. Calculate the magnitude of the torque acting on the coil.