A long solenoid has turns per metre and carries a current of

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

Problem

A long solenoid has

1000

turns per metre and carries a current of

2\,\text{A}

. A single circular loop of radius

5\,\text{cm}

carries the same current. What is the ratio

B_{\text{solenoid}} : B_{\text{loop}}

of the magnetic fields produced at their respective interior points? (a)

10 : 1

(b)

50 : 1

(c)

100 : 1

(d)

1 : 100