---
title: "Two long, straight wires are oriented perpendicular to the \\(xy\\)-plane. Wire 1 passes through the \\(x\\)-axis at \\(x = -d\\) and Wire 2 passes through the \\(x\\)-axis at \\(x = +d\\). Both wires carry equal steady currents \\(I\\) directed out of the page in the \\(+z\\)-direction. Which of the following best describes the direction of the net magnetic field \\(\\vec{B}\\) at point \\(P\\) located on the \\(y\\)-axis at \\(y = +d\\)?"
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url: "https://nerd-notes.com/ubq/121247/"
date_modified: "2026-08-23T04:59:00+00:00"
---

# Two long, straight wires are oriented perpendicular to the \(xy\)-plane. Wire 1 passes through the \(x\)-axis at \(x = -d\) and Wire 2 passes through the \(x\)-axis at \(x = +d\). Both wires carry equal steady currents \(I\) directed out of the page in the \(+z\)-direction. Which of the following best describes the direction of the net magnetic field \(\vec{B}\) at point \(P\) located on the \(y\)-axis at \(y = +d\)?

Two long, straight wires are oriented perpendicular to the \(xy\)-plane. Wire 1 passes through the \(x\)-axis at \(x = -d\) and Wire 2 passes through the \(x\)-axis at \(x = +d\). Both wires carry equal steady currents \(I\) directed out of the page in the \(+z\)-direction. Which of the following best describes the direction of the net magnetic field \(\vec{B}\) at point \(P\) located on the \(y\)-axis at \(y = +d\)?

![A 2D Cartesian coordinate system with a horizontal x-axis and vertical y-axis intersecting at origin O. Wire 1 is shown as a small open circle containing a central dot located on the negative x-axis, labeled -d. Wire 2 is shown as an identical small open circle containing a central dot located on the positive x-axis, labeled +d. A solid dot labeled P is positioned on the positive y-axis at +d. Two thin dashed line segments extend from (-d, 0) to (0, d) and from (+d, 0) to (0, d). No other labels, lines, text, or axes appear.](https://nerd-notes.com/wp-content/uploads/ubq-frq-generated/stem-fig-1-1787461140-sRgIdi.jpg)

- **A.** In the \(+x\)-direction
- **B.** In the \(-x\)-direction
- **C.** In the \(+y\)-direction
- **D.** In the \(-y\)-direction

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/121247/*