The work done in rotating a magnetic of magnetic moment 2 A-m² in a magnetic field of 5 x 10³ T from the direction along the magnetic field to opposite direction in the magnetic field is

Options

(a) Zero
(b) 2 x 10⁻² J
(c) 10⁻² J
(d) 10 J

Correct Answer:

2 x 10⁻² J

Explanation:

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