A current carrying loop is placed in a uniform magnetic field in …

MCQ

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

A
$I > III > II > IV$
B
$I > II > III > IV$
✓
$I > IV > II > III$
D
$III > IV > I > II$

✓

Answer

Correct option: C.

$I > IV > II > III$

c
$U = \, - \vec M.\vec B = - MB\cos \theta $

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