A long solenoid has radius and total number of turns

PHYSICS · Single correct · CBSE · Physics · Magnetism and Matter · Magnetism and Matter

Problem

25 \text{ cm}

long solenoid has radius

2 \text{ cm}

and

500

total number of turns. It carries a current of

15 \text{ A}

. If it is equivalent to a magnet of the same size and magnetization

\vec{M}

(magnetic moment/volume), then

|\vec{M}|

is: (1)

30000\pi \text{ Am}^{-1}

(2)

3\pi \text{ Am}^{-1}

(3)

30000 \text{ Am}^{-1}

(4)

300 \text{ Am}^{-1}