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JEE Main & Advanced Physics Magnetic Effects of Current / करंट का चुंबकीय प्रभाव Question Bank Critical Thinking

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    A current carrying loop is placed in a uniform magnetic field in four different orientations, I,II, III & IV arrange them in the decreasing order of potential Energy [IIT-JEE (Screening) 2003] I.                          II. III.                                 IV.

    A)            I > III > II > IV                        

    B)            I > II >III > IV

    C)            I > IV > II > III                        

    D)            III > IV > I > II

    Correct Answer: C

    Solution :

               \[U=-MB\cos \theta \]; where \[\theta =\]Angle between normal to the plane of the coil and direction of magnetic field. 


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