Loop P has turns and radius carrying a current of

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

Problem

Loop P has

50

turns and radius

4\,\text{cm}

carrying a current of

2\,\text{A}

. Loop Q has

100

turns and radius

6\,\text{cm}

. What current must flow through loop Q so that the magnetic field at its centre equals that at the centre of loop P? (a)

3.0\,\text{A}

(b)

1.5\,\text{A}

(c)

0.75\,\text{A}

(d)

2.25\,\text{A}