---
title: "A bar magnet is centered at the origin with its longitudinal axis aligned along the \\(x\\)-axis. The magnet has its south pole located at \\(x = -d\\) and its north pole located at \\(x = +d\\). Three locations are identified: Point \\(P_1\\) at \\((2d, 0)\\), Point \\(P_2\\) at \\((0, 2d)\\), and Point \\(P_3\\) at the origin \\((0, 0)\\) inside the magnet. Which of the following correctly indicates the direction of the magnetic field vector \\(\\vec{B}\\) at points \\(P_1\\), \\(P_2\\), and \\(P_3\\)?"
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url: "https://nerd-notes.com/ubq/121261/"
date_modified: "2026-08-23T04:59:04+00:00"
---

# A bar magnet is centered at the origin with its longitudinal axis aligned along the \(x\)-axis. The magnet has its south pole located at \(x = -d\) and its north pole located at \(x = +d\). Three locations are identified: Point \(P_1\) at \((2d, 0)\), Point \(P_2\) at \((0, 2d)\), and Point \(P_3\) at the origin \((0, 0)\) inside the magnet. Which of the following correctly indicates the direction of the magnetic field vector \(\vec{B}\) at points \(P_1\), \(P_2\), and \(P_3\)?

A bar magnet is centered at the origin with its longitudinal axis aligned along the \(x\)-axis. The magnet has its south pole located at \(x = -d\) and its north pole located at \(x = +d\). Three locations are identified: Point \(P_1\) at \((2d, 0)\), Point \(P_2\) at \((0, 2d)\), and Point \(P_3\) at the origin \((0, 0)\) inside the magnet. Which of the following correctly indicates the direction of the magnetic field vector \(\vec{B}\) at points \(P_1\), \(P_2\), and \(P_3\)?

![A horizontal bar magnet is centered at the origin of a coordinate system with a horizontal dashed x-axis and a vertical dashed y-axis. The left half of the bar magnet is labeled S and terminates at x = -d, while the right half is labeled N and terminates at x = +d. A solid dot labeled P_1 is located on the x-axis to the right of the magnet at x = 2d. A second solid dot labeled P_2 is located on the positive y-axis above the magnet at y = 2d. A third solid dot labeled P_3 is located at the origin (0, 0) inside the magnet. No other labels, lines, text, or axes appear.](https://nerd-notes.com/wp-content/uploads/ubq-frq-generated/stem-fig-1-1787461143-edtntz.jpg)

- **A.** At \(P_1\): \(+x\)-direction; At \(P_2\): \(-x\)-direction; At \(P_3\): \(+x\)-direction
- **B.** At \(P_1\): \(+x\)-direction; At \(P_2\): \(-x\)-direction; At \(P_3\): \(-x\)-direction
- **C.** At \(P_1\): \(+x\)-direction; At \(P_2\): \(+y\)-direction; At \(P_3\): \(+x\)-direction
- **D.** At \(P_1\): \(+x\)-direction; At \(P_2\): \(+y\)-direction; At \(P_3\): \(\vec{B} = \vec{0}\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/121261/*