A current carrying loop is placed in a uniform magnetic field in four different orientations, I, II, III and IV, arrange them in the decreasing order of potential energy II. [image:5_image25.emf] [image:5_image26.emf] III. IV. [image:5_image27.emf] [image:5_image28.emf]

Question

Dr. Abubacker · Accepted Answer

(c) Potential energy, $U = \mathbf{M.B} = - MN\cos	heta$
Here M = magnetic moment of the loop
$	heta =$ angle between M and B
$U$ is maximum when $	heta = 180{^\circ}$ and minimum when $	heta = 0{^\circ}.$ So as $	heta$ decrease from $180{^\circ}\ to\ 0{^\circ}$ its PE also decreases.

Q. A current carrying loop is placed in a uniform magnetic field in four different orientations, I, II, III and IV, arrange them in the decreasing order of potential energy II.

III. IV.

Explanation

Reviewed by Dr. Abubacker

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Q. A current carrying loop is placed in a uniform magnetic field in four different orientations, I, II, III and IV, arrange them in the decreasing order of potential energy II. III. IV.

Explanation

Reviewed by Dr. Abubacker

Want more practice?

Q. A current carrying loop is placed in a uniform magnetic field in four different orientations, I, II, III and IV, arrange them in the decreasing order of potential energy II.

III. IV.