The magnetic field inside a long solenoid is required to be

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

Problem

5.0\,\text{mT}

. The solenoid has

800

turns per metre and is air-cored. Calculate the current that must be passed through it. (a)

2.5\,\text{A}

(b)

10\,\text{A}

(c)

5.0\,\text{A}

(d)

0.50\,\text{A}