A Circular Coil (Radius = 0

question 3

Multiple Choice

A circular coil (radius = 0.40 m) has 160 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 0.16 N*m when the current in the coil is 4.0 mA.What is the magnitude of the magnetic field?

• A)0.37 T
• B)1.6 T
• C)0.50 T
• D)1.2 T

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