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A circular coil of wire with dipole moment 7 is placed in a uniform magnetic field
B
so that the field lines are
parallel to the axis of the circle. If the direction of current in the wire is reversed, what is the magnitude of the
change in the coil's stored energy?
2 µB
µB
O 0.866 µB
O 0.693 µB
O There is no change in the stored energy.

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