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A loop of diameter d = 12 cm, carrying a current I = 0.4 A is placed inside a magnetic field = (0.2 T)i +

A loop of diameter d = 12 cm, carrying a current I = 0.4 A is placed inside a magnetic field = (0.2 T)i + (0.4 T) j. The normal to the loop is parallel to the unit vector n=0.61-0.81 .What is the potential energy of the loop?

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