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The magnetic dipole moment of a current loop is independent of
(a)Magnetic field in which it is lying
(b)Number of turns
(c)Area of the loop
(d)Current in the loop

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Important Questions on Magnetic Effect of Electric Current
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A rectangular loop of sides and , carrying a current of , is placed in different orientations as shown in the figure below.
(a) (b)
(c) (d)
If there is a uniform magnetic field of in the positive direction, in which orientations the loop would be in stable equilibrium and unstable equilibrium?

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A coil of turns carrying a current of in a magnetic field of . The torque acting on the coil is

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The ratio of the magnetic field at the centre of a current-carrying circular coil to magnetic moment is . If the current and the radius both are doubled. The new ratio will become

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