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AP Physics C: E&M
12.3 Magnetic Fields of Current-Carrying Wires and the Biot-Savart Law
IntermediateMCQMathematical23.9k
Cross-sectional view of three parallel current-carrying wires.
Cross-sectional view of three parallel current-carrying wires.
Three long, straight, parallel wires lie in the same plane with equal spacing \(d\) between adjacent wires. Wires 1 and 2 carry equal currents \(I\) out of the page, while Wire 3 carries an equal current \(I\) into the page. Which of the following correctly ranks the magnitudes of the net magnetic force per unit length, \(F/L\), exerted on each wire?

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