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AP Physics 2
12.3 Magnetism and Current-Carrying Wires
BeginnerMCQMathematical16.9k
Three vertical long straight line segments representing wires arranged horizontally side by side, labeled Wire 1, Wire 2, and Wire 3 from left to right. Wire 1 has an upward vertical arrow labeled 2I_0 along its length, with a filled dot labeled P_1 positioned to its right at a horizontal distance marked d_0. Wire 2 has an upward vertical arrow labeled I_0 along its length, with a filled dot labeled P_2 positioned to its right at a horizontal distance marked d_0. Wire 3 has an upward vertical arrow labeled 2I_0 along its length, with a filled dot labeled P_3 positioned to its right at a horizontal distance marked 2d_0. No other labels, lines, text, or axes appear.
Three independent current-carrying wires and nearby observation points.
Three long, straight, independent wires carry constant currents as shown in the diagram. Point \(P_1\) is at a distance \(d_0\) from Wire 1, which carries current \(2I_0\). Point \(P_2\) is at a distance \(d_0\) from Wire 2, which carries current \(I_0\). Point \(P_3\) is at a distance \(2d_0\) from Wire 3, which carries current \(2I_0\). Which of the following correctly ranks the magnitude of the magnetic field produced at points \(P_1\), \(P_2\), and \(P_3\) by their respective wires?

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