---
title: "Two long, straight parallel wires are perpendicular to the xy-plane and intersect the x-axis at x = 0 and x = d. Wire 1 is located at x = 0 and carries a steady current 2I_0 directed out of the page. Wire 2 is located at x = d and carries a steady current I_0 directed into the page. Which of the following graphs best represents the y-component of the net magnetic field, B_y, along the x-axis as a function of position x?"
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url: "https://nerd-notes.com/ubq/124896/"
date_modified: "2026-09-28T14:11:51+00:00"
---

# Two long, straight parallel wires are perpendicular to the xy-plane and intersect the x-axis at x = 0 and x = d. Wire 1 is located at x = 0 and carries a steady current 2I_0 directed out of the page. Wire 2 is located at x = d and carries a steady current I_0 directed into the page. Which of the following graphs best represents the y-component of the net magnetic field, B_y, along the x-axis as a function of position x?

Two long, straight parallel wires are perpendicular to the xy-plane and intersect the x-axis at x = 0 and x = d. Wire 1 is located at x = 0 and carries a steady current 2I_0 directed out of the page. Wire 2 is located at x = d and carries a steady current I_0 directed into the page. Which of the following graphs best represents the y-component of the net magnetic field, B_y, along the x-axis as a function of position x?

![A Cartesian coordinate plane showing a horizontal x-axis and a vertical y-axis intersecting at the origin (0,0). At the origin, a small circle contains a centered dot representing current directed out of the page, labeled 2I_0. On the positive x-axis at a distance labeled d, an identical small circle contains an \times symbol representing current directed into the page, labeled I_0. A dashed horizontal line extends along the positive x-axis past position d. No other labels, lines, text, or axes appear.](https://nerd-notes.com/wp-content/uploads/ubq-frq-generated/stem-fig-1-1790604709-EyumKH.jpg)

- **A.** Graph A
- **B.** Graph B
- **C.** Graph C
- **D.** Graph D

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/124896/*