A circular wire loop of radius 0.110 m carries a current of 9.00 mA, and is plac

Question

A circular wire loop of radius 0.110 m carries a current of 9.00 mA, and is placed in a 50.0 mT magnetic field. As the orientation of the loop is changed, the magnetic field exerts a varying torque on the wire loop. What is the maximum magnitude of this torque? A circular wire loop of radius 0.110 m carries a current of 9.00 mA, and is placed in a 50.0 mT magnetic field. As the orientation of the loop is changed, the magnetic field exerts a varying torque on the wire loop. What is the maximum magnitude of this torque?

Explanation / Answer

Maximum when the loop is perpendicular to the field.
T = BI A = 50e-3*9e-3*3.141*0.11*0.11 =1.709 e-5 Nm

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