A bar magnet of length 0.2 m and pole st...

A bar magnet of length 0.2 m and pole strength 5 Am is kept in a uniform magnetic induction field of strength `15 wb//m^(-2)` making an angle of `30^(@)` with the field. Find the couple acting on it.

2.5 Nm

5.5 Nm

7.5 Nm

9.0 Nm

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