A Circular Coil (Radius = 0

question 8

Multiple Choice

A circular coil (radius = 0.54 m) has 163 turns and is in a uniform magnetic field.If the orientation of the coil is varied through all possible positions,the maximum torque on the coil by magnetic forces is 0.19 N⋅m when the current in the coil is 2.1 mA.What is the magnitude of the magnetic field?

• A) 1.9 T
• B) 0.05 T
• C) 0.61 T
• D) 53 T
• E) ​0.99 T

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