A bar magnet of magnetic moment $M$ is cut into two parts of equal lengths/breadths. The magnetic moment of each part will be:

z e r o

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0.5 M

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M

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2 M

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Solution

The correct option is B $0.5 M$
Magnetic moment= $2 m l$ , where $m =$ dipole strength and $l =$ length
on cutting into half $M^{'} = 2 M (L / 2)$
$⟹ M^{'} = 0.5 M$

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A bar magnet of magnetic moment M is cut into two parts of equal lengths/breadths. The magnetic moment of each part will be:

The correct option is B 0.5 MMagnetic moment=2ml, where m=dipole strength and l=lengthon cutting into half M′=2M(L/2)⟹M′=0.5M

A bar magnet of magnetic moment $M$ is cut into two parts of equal lengths/breadths. The magnetic moment of each part will be:

The correct option is B $0.5 M$
Magnetic moment= $2 m l$ , where $m =$ dipole strength and $l =$ length
on cutting into half $M^{'} = 2 M (L / 2)$
$⟹ M^{'} = 0.5 M$