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
Answer: C
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