Question

What can be the angle between the magnetic moment of a bar magnet and external magnetic field if the
magnet has maximum magnetic potential energy?

Answer 1

QUESTION⤵️

What can be the angle between the magnetic moment of a bar magnet and external magnetic field if the

What can be the angle between the magnetic moment of a bar magnet and external magnetic field if themagnet has maximum magnetic potential energy?

ANSWER ⤵️

dw=−τ.dθ=−MBsinθ.dθ where θ is angle between M and B

Since work done=Potential energy lost

⟹du=−dw=MBsinθ.dθ

u=∫MBsinθ.dθ=−MBcosθ

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