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Magnetic Effect of Current — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsMagnetic Effect of Current1 Mark
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
    $I > II > III > IV$
  • C
    $I > IV > II > III$
  • D
    $III > IV > I > II$
✓

Answer

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

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