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


C

Physics & Space Science

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Indicate whether the statement is true or false

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By what factor does the kinetic energy of a car change when its speed is tripled?

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