A Flat Circular Loop of Wire of Radius $0.50 \mathrm {~m}$

question 138

Multiple Choice

A flat circular loop of wire of radius $0.50 \mathrm {~m}$ that is carrying a $2.0$ -A current is in a uniform magnetic field of $0.30 \mathrm {~T}$ . What is the magnitude of the magnetic torque on the loop when the plane of its area is perpendicular to the magnetic field?

• A) \(0.41 \mathrm {~N} \cdot \mathrm { m }\)
• B) \(0.58 \mathrm {~N} \cdot \mathrm { m }\)
• C) \(0.47 \mathrm {~N} \cdot \mathrm { m }\)
• D) \(0.52 \mathrm {~N} \cdot \mathrm { m }\)
• E) \(0.00 \mathrm {~N} \cdot \mathrm { m }\)

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