A square loop of side carries a current of

PHYSICS · Subjective · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism

Problem

A square loop of side

6\,\text{cm}

carries a current of

30\,\text{A}

. Calculate the magnitude of the magnetic field

\mathbf{B}

at a point

P

lying on the axis of the loop at a distance of

\sqrt7\,\text{cm}

from its centre.