A Flat Circular Coil of Wire Having 200 Turns and Diameter

question 85

Multiple Choice

A flat circular coil of wire having 200 turns and diameter 6.0 cm carries a current of 7.0 A. It is placed in a magnetic field of $0.60 \mathrm {~T}$ with the plane of the coil making an angle of 30° with the magnetic field. What is the magnitude of the magnetic torque on the coil?

• A)2.1 N ? m
• B)1.2 N ? m
• C)3.9 N ? m
• D)5.4 N ? m
• E)1.0 N ? m

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