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AP Physics 2
12.3 Magnetism and Current-Carrying Wires
BeginnerMCQMathematicalConceptual17.5k
A vertical long straight wire carrying a constant current I directed upward. Four points are labeled relative to the wire. Point W is located at a horizontal distance d to the right of the wire. Point X is located at a horizontal distance 2d to the right of the wire. Point Y is located at a horizontal distance 2d to the left of the wire. Point Z is located at a horizontal distance 4d to the right of the wire. Dashed horizontal line segments with dimension labels d, 2d, and 4d indicate the radial distances from the wire to each point. No other labels, lines, text, or axes appear.
A long straight wire carrying current \(I\) and four surrounding points.
A long, straight wire carries a constant electric current \(I\), as shown. Points \(W\), \(X\), \(Y\), and \(Z\) are located near the wire at radial distances of \(d\), \(2d\), \(2d\), and \(4d\) from the wire, respectively. Which of the following correctly ranks the magnitude of the magnetic field \(B\) at these four points?

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