A bar magnet of magnetic moment M and length L is cut into two equal parts each of length L/2. The magnetic moment of each part will be

Question

A bar magnet of magnetic moment M and length L is cut into two equal parts each of length L/2. The magnetic moment of each part will be (A) M (B) M/4 (C) √2M (D) M/2

Tardigrade Admin · Accepted Answer

As magnetic moment = pole strength × length and length is halved without affecting pole strength, therefore, magnetic moment becomes half.

Q. A bar magnet of magnetic moment $M$ and length $L$ is cut into two equal parts each of length $L /2$ . The magnetic moment of each part will be

M

M/4

$2 M$

M/2

As magnetic moment = pole strength × length and length is halved without affecting pole strength, therefore, magnetic moment becomes half.

Q. A bar magnet of magnetic moment M and length L is cut into two equal parts each of length L/2. The magnetic moment of each part will be

M

M/4

2​M

M/2

As magnetic moment = pole strength × length and length is halved without affecting pole strength, therefore, magnetic moment becomes half.

Q. A bar magnet of magnetic moment $M$ and length $L$ is cut into two equal parts each of length $L /2$ . The magnetic moment of each part will be

$2 M$