A Loop of Diameter D = 12 Cm, Carrying a Current

question 9

Multiple Choice

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

• A)-4.5 × 10^-4 J
• B)+9.0 × 10^-4 J
• C)-9.0 × 10^-4 J
• D)-2.3 × 10^-4 J
• E)+4.5 × 10^-4 J

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