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The magnetic moment of a bar magnet is 2...

The magnetic moment of a bar magnet is 2A m2. if the magnetic length of the bar magnet is 5 cm, determine the force acting on it an external magnetic field of strength 0.6 T.

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Magnetic moment, `M=2Am^(2)`
Magnetic length , `2l=5 cm =5xx10^(-2) m`.
Magnetic field, B=0.6 T
`B=("force")/("pole strength(m)")`
`F=Bxxm, M=mxx2l`
`2=mxx5xx10^(-2)`
`m=(2xx100)/5=40 Am`
`:. F=0.6 xx40 =24 N`
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