A Rectangular Coil (0

question 137

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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