The work done in rotating a bar magnet of magnetic moment M in a magnetic field B by an angle θ from stable equilibrium is
A. MB sinθ
B. MB cosθ
C. MB (1 – cosθ)
D. MB (1 – sinθ)
Answer:C
The work done in rotating a bar magnet of magnetic moment M in a magnetic field B by an angle θ from stable equilibrium is
A. MB sinθ B. MB cosθ C. MB (1 – cosθ) D. MB (1 – sinθ)