A bar magnet having a magnetic movement of 2 \times 10^4 {\JT}^{-1} is free to rotate in a horizontal plane. A horizontal magnetic field {\B}=6 \times 10^{-4} T exists in the space. The work done in taking the magnet slowly from a direction parallel to the field to a direction 60^{\circ} from the field is :

AIPMT 2009 Physics and Chemistry Paper

Question : 27 of 100

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A bar magnet having a magnetic movement of 2×104JT−1 is free to rotate in a horizontal plane. A horizontal magnetic field B=6×10−4 T exists in the space. The work done in taking the magnet slowly from a direction parallel to the field to a direction 60∘ from the field is :

2J
0.6J
12J
6J

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