The Figure Shows the Orientation of a Flat Circular Loop

question 45

Multiple Choice

The figure shows the orientation of a flat circular loop consisting of 50 closely wrapped turns each carrying a current I. The magnetic field in the region is directed in the positive z direction and has a magnitude of 50 mT. The loop can turn about the y axis. If θ = 20°, R = 0.50 m, and I = 12A, what is the magnitude of the torque exerted on the loop?

• A) 8.1 N ⋅ m
• B) 24 N ⋅ m
• C) 22 N ⋅ m
• D) 13 N ⋅ m
• E) 16 N ⋅ m

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