Physics

Physics

Problem

State the expression for the potential energy

U

of a magnetic dipole of moment

\mu

kept in a uniform magnetic field

B

at an angle

\theta

with the field direction. a)

U=-\mu B\cos\theta

b)

U=+\mu B\cos\theta

c)

U=-\mu B\sin\theta

d)

U=\mu B(1-\cos\theta)

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