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Short bar magnet is place 30degrees with...

Short bar magnet is place 30degrees with the external magnetic field 0.06T which experiences a torque of 0.018Nm then the minimum work done required to move from its stable equilibrium to unstable equilibrium is

A

`9.2xx10^(-3) J`

B

`7.2xx10^(-2) J`

C

`6.4xx10^(-2) J`

D

`11.7xx10^(-3) J`

Text Solution

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The correct Answer is:
B
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