A bar magnet of magnetic moment M is cut into p parts along the axial line and q parts perpendicular to the axial line. Find out the magnetic moment of each piece formed by performing the operation.

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\frac{M}{p g}

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\frac{M}{q} p

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\frac{p q}{M}

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Solution

The correct option is B $\frac{M}{p g}$
We have $M = m \times l = I n A$
Where, M= magnetic moment
m=pole strength due to charge
l=length
After cutting
$l ⟹ \frac{l}{g} and m ⟹ \frac{m}{p}$
Thus, $M = \frac{M}{p g}$

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A bar magnet of magnetic moment M is cut into p parts along the axial line and q parts perpendicular to the axial line. Find out the magnetic moment of each piece formed by performing the operation.

The correct option is B MpgWe have M=m×l=InAWhere, M= magnetic momentm=pole strength due to chargel=lengthAfter cuttingl⟹lg and m⟹mpThus, M=Mpg

The correct option is B $\frac{M}{p g}$
We have $M = m \times l = I n A$
Where, M= magnetic moment
m=pole strength due to charge
l=length
After cutting
$l ⟹ \frac{l}{g} and m ⟹ \frac{m}{p}$
Thus, $M = \frac{M}{p g}$