A current carrying loop is placed in a uniform magnetic field in four different orientation:I,II, III & IV. Arrange them in the decreasing order of their potential Energy.

I > III > II > IV

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I > II >III > IV

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I > IV > II > III

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III > IV > I > II

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Solution

The correct option is C I > IV > II > III
$U = - M B c o s θ$ ; where $θ$ = Angle between normal to the plane of the coil and direction of magnetic field.

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A current carrying loop is placed in a uniform magnetic field in four different orientation:I,II, III & IV. Arrange them in the decreasing order of their potential Energy.

The correct option is C I > IV > II > IIIU=−MB cosθ; where θ= Angle between normal to the plane of the coil and direction of magnetic field.

The correct option is C I > IV > II > III
$U = - M B c o s θ$ ; where $θ$ = Angle between normal to the plane of the coil and direction of magnetic field.