A Rectangular Coil (0

question 76

Multiple Choice

A rectangular coil (0.20 m × 0.80 m) has 200 turns and is in a uniform magnetic field of 0.30 T. When the orientation of the coil is varied through all possible positions, the maximum torque on the coil by magnetic forces is 0.080 N ⋅ m. What is the current in the coil?

• A) 5.0 mA
• B) 1.7 A
• C) 8.3 mA
• D) 1.0 A
• E) 42 mA

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