A 30 Cm Long Wire with an East-West Orientation Carries

question 87

Multiple Choice

A 30 cm long wire with an east-west orientation carries a current of 3.0 A westward. There is a uniform magnetic field perpendicular to this wire. If the force on the wire is 0.18 N upward, what are the direction and magnitude of the magnetic field?

• A) 0.20 T up
• B) 0.20 T north
• C) 0.20 T south
• D) 2.0 × 10^-3 T north
• E) 2.0 × 10^-3 T up

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