Question

A current loop with a current is placed in a magnetic field , the potential energy will not depend upon:

A

orientation of loop with respect to direction of magnetic field.

B

alignment of magnetic moment.

C

current in the loop.

D

material of the wire.

Easy
Updated on : 2022-09-05
Solution
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Correct option is D)

For the current loop ABCD in magnetic field
Let current flowing = I
Area enclosed = A and
= magnetic dipole moment.
Now torque expression
Thus potential energy,
As since
Thus U depends on
i) orientation
ii) Alignment of magnetic moment
iii) Current = I

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