---
title: "A flat rectangular loop of wire with resistance \\(R\\), length \\(L\\) parallel to a long straight wire, and width \\(w\\) sits in the same plane as the wire, which carries a constant current \\(I\\). The loop is pulled directly away from the long wire at a constant speed \\(v\\). Which of the following claims correctly identifies the direction of the net magnetic force exerted on the loop and provides a valid justification?"
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url: "https://nerd-notes.com/ubq/118675/"
date_modified: "2026-08-04T08:13:40+00:00"
---

# A flat rectangular loop of wire with resistance \(R\), length \(L\) parallel to a long straight wire, and width \(w\) sits in the same plane as the wire, which carries a constant current \(I\). The loop is pulled directly away from the long wire at a constant speed \(v\). Which of the following claims correctly identifies the direction of the net magnetic force exerted on the loop and provides a valid justification?

A flat rectangular loop of wire with resistance \(R\), length \(L\) parallel to a long straight wire, and width \(w\) sits in the same plane as the wire, which carries a constant current \(I\). The loop is pulled directly away from the long wire at a constant speed \(v\). Which of the following claims correctly identifies the direction of the net magnetic force exerted on the loop and provides a valid justification?

![A vertical straight line represents a long wire carrying current I upward, indicated by an arrow on the wire labeled I. To the right of the wire is a rectangular conductive loop with vertical sides of length L parallel to the wire and horizontal sides of length w. A horizontal arrow labeled v points to the right from the center of the loop, indicating its velocity away from the wire. No other labels, lines, text, or axes appear.](https://nerd-notes.com/wp-content/uploads/ubq-frq-generated/stem-fig-1-1785831220-jnYHVk.jpg)

- **A.** Away from the wire, because the induced current produces a magnetic field that reinforces the external field, driving the loop in the direction of motion.
- **B.** Toward the wire, because the magnetic force on the side of the loop closer to the wire is attractive and greater in magnitude than the repulsive magnetic force on the farther side.
- **C.** Toward the wire, because the induced current in the loop experiences magnetic forces on its top and bottom horizontal sides that pull the loop inward toward the wire.
- **D.** Away from the wire, because the magnetic force on the side of the loop closer to the wire is repulsive and greater in magnitude than the attractive magnetic force on the farther side.

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/118675/*