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A current loop in a magnetic field...

A current loop in a magnetic field

A

can be in equilibrium in one orientation

B

can be in equilibrium in two orientation both the equilibrium states are unstable

C

can be in equilibrium in two orientation one stable while the other is unstable

D

experiences a torque whether the field is uniform or non uniform in all orientations.

Text Solution

Verified by Experts

The correct Answer is:
C

`vec(tau)= vec(M)xxvec(B)rArr tau=MB sinalpha`.
`alpha = 0^@` corresponds to stable equilibrium ,
`alpha = 180^@` corresponds to unstable equilibrium.
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