A current carrying loop is placed in a uniform magnetic field 'B' in different orientations I, II, III and IV as shown in the figure. The correct order of decreasing potential energy is( 
-unit vector normal to the plane of the loop)
(I) 
(II) 
(III) 
(IV) 
Text Solution
Verified by ExpertsThe correct answer is:
C
Potential energy in a uniform magnetic field, 
(i) For orientation I 
(ii) For orientation II 
(iii) For orientation III 
(iv) For orientation-IV 
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