The magnetic field due to a current-carrying circular loop of radius at a point on…

PHYSICS · Single correct · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism

Problem

The magnetic field due to a current-carrying circular loop of radius

3\ \text{m}

at a point on its axis at a distance of

4\ \text{m}

from the centre is

54\ \mu\text{T}

. What is its value at the centre of the loop? (a)

250\ \mu\text{T}

(b)

150\ \mu\text{T}

(c)

125\ \mu\text{T}

(d)

75\ \mu\text{T}