Consider a bar magnet of pole strength ' $m$ ' and with effective length ' $2 l$ ' . If the bar magnet is made into two pieces along its equatorial line, then its magnetic moment is ……………

$l m$

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$\frac{l m}{2}$

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$2 l m$

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$\frac{l m}{4}$

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Solution

The correct option is C
$2 l m$

The magnetic moment is the product of pole strength and effective length.
$\Rightarrow M a g n e t i c m o m e n t = m \times 2 l = 2 l m$
Hence, the correct option is (C).

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Consider a bar magnet of pole strength 'm' and with effective length '2l' . If the bar magnet is made into two pieces along its equatorial line, then its magnetic moment is ……………

The correct option is C 2lmThe magnetic moment is the product of pole strength and effective length.⇒Magneticmoment=m×2l=2lmHence, the correct option is (C).

Consider a bar magnet of pole strength ' $m$ ' and with effective length ' $2 l$ ' . If the bar magnet is made into two pieces along its equatorial line, then its magnetic moment is ……………

The correct option is C
$2 l m$

The magnetic moment is the product of pole strength and effective length.
$\Rightarrow M a g n e t i c m o m e n t = m \times 2 l = 2 l m$
Hence, the correct option is (C).