A Single Circular Loop of Wire of Radius 0

question 5

Multiple Choice

A single circular loop of wire of radius 0.45 m carries a constant current of 2.4 A. The loop may be rotated about an axis that passes through the center and lies in the plane of the loop. When the orientation of the normal to the loop with respect to the direction of the magnetic field is 36°, the torque on the coil is 1.5 N . m. What is the magnitude of the uniform magnetic field exerting this torque on the loop?

• A)0.37 T
• B)1.7 T
• C)3.0 T
• D)0.46 T
• E)0.80 T

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