Magnetic Effects Of Current Question 156

Question: 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.

Options:

A) I > III > II > IV

B) I > II >III > IV

C) I > IV > II > III

D) III > IV > I > II

Show Answer

Answer:

Correct Answer: C

Solution:

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