---
title: "Two long, straight parallel wires are held horizontally with a separation distance of \\(d = 5.0 \\text{ cm}\\). Wire 1 carries a steady current of \\(I_1 = 12 \\text{ A}\\) to the right, and Wire 2 carries a steady current of \\(I_2 = 25 \\text{ A}\\) to the left. What is the magnitude of the magnetic force per unit length exerted on Wire 2 by Wire 1?"
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url: "https://nerd-notes.com/ubq/121213/"
date_modified: "2026-08-23T04:58:53+00:00"
---

# Two long, straight parallel wires are held horizontally with a separation distance of \(d = 5.0 \text{ cm}\). Wire 1 carries a steady current of \(I_1 = 12 \text{ A}\) to the right, and Wire 2 carries a steady current of \(I_2 = 25 \text{ A}\) to the left. What is the magnitude of the magnetic force per unit length exerted on Wire 2 by Wire 1?

Two long, straight parallel wires are held horizontally with a separation distance of \(d = 5.0 \text{ cm}\). Wire 1 carries a steady current of \(I_1 = 12 \text{ A}\) to the right, and Wire 2 carries a steady current of \(I_2 = 25 \text{ A}\) to the left. What is the magnitude of the magnetic force per unit length exerted on Wire 2 by Wire 1?

![A two-dimensional schematic shows two horizontal, parallel straight line segments representing wires. The upper line segment is labeled Wire 1 and has a horizontal arrow pointing to the right labeled \(I_1 = 12 \text{ A}\) situated just above the line. The lower line segment is labeled Wire 2, parallel to Wire 1, and has a horizontal arrow pointing to the left labeled \(I_2 = 25 \text{ A}\) situated just below the line. A vertical double-headed dimension arrow connects the centers of the two line segments and is labeled \(d = 5.0 \text{ cm}\). No other lines, labels, text, or coordinates appear.](https://nerd-notes.com/wp-content/uploads/ubq-frq-generated/wire-setup-1787461132-thqnhm.jpg)

- **A.** \(1.2 \times 10^{-3} \text{ N/m}\)
- **B.** \(2.4 \times 10^{-3} \text{ N/m}\)
- **C.** \(7.5 \times 10^{-3} \text{ N/m}\)
- **D.** \(2.4 \times 10^{-2} \text{ N/m}\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/121213/*