A Round Loop of Diameter 12 Cm,carrying a Current of 0.40

question 6

Multiple Choice

A round loop of diameter 12 cm,carrying a current of 0.40 A,is placed inside a magnetic field = 0.20 T + 0.40 T .The normal to the loop is parallel to the unit vector What is the potential energy of the loop?

• A) -4.5 × 10^-3 J
• B) +2.0 × 10^-3 J
• C) -2.0 × 10^-3 J
• D) -2.3 × 10^-3 J
• E) +4.5 × 10^-3 J

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