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A bar magnet of magnetic moment $3.0 {Am}^{2}$ is placed in a uniform magnetic induction field of $2 x 10^{- 5} T$ . If each pole of the magnet experiences a force of $6 x 10^{- 4} N$ . The length of the magnet is

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detailed solution

Correct option is D

F=mB⇒F=MLx B⇒6 x 10-4=3 L x 2 x 10-5 ⇒L=0.1 m

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A bar magnet of magnetic moment 3.0 Am2 is placed in a uniform magnetic induction field of 2 x 10-5 T. If each pole of the magnet experiences a force of 6 x 10-4N. The length of the magnet is

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A bar magnet of magnetic moment $3.0 {Am}^{2}$ is placed in a uniform magnetic induction field of $2 x 10^{- 5} T$ . If each pole of the magnet experiences a force of $6 x 10^{- 4} N$ . The length of the magnet is