---
title: "A bar magnet is oriented horizontally with its south pole facing the left end of a stationary, closed-circuit solenoid. In Trial 1, the bar magnet is moved to the right toward the solenoid at a constant speed v. In Trial 2, the bar magnet is moved to the left away from the solenoid at the same constant speed v. Which of the following correctly identifies the magnetic pole induced at the left end of the solenoid and the direction of the magnetic force exerted by the solenoid on the bar magnet for each trial?  | Trial | Left End of Solenoid | Force on Magnet | |—|—|—| | 1 (Approaching) | ? | ? | | 2 (Receding) | ? | ? |"
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url: "https://nerd-notes.com/ubq/123203/"
date_modified: "2026-09-28T11:57:54+00:00"
---

# A bar magnet is oriented horizontally with its south pole facing the left end of a stationary, closed-circuit solenoid. In Trial 1, the bar magnet is moved to the right toward the solenoid at a constant speed v. In Trial 2, the bar magnet is moved to the left away from the solenoid at the same constant speed v. Which of the following correctly identifies the magnetic pole induced at the left end of the solenoid and the direction of the magnetic force exerted by the solenoid on the bar magnet for each trial?

| Trial | Left End of Solenoid | Force on Magnet |
|—|—|—|
| 1 (Approaching) | ? | ? |
| 2 (Receding) | ? | ? |

A bar magnet is oriented horizontally with its south pole facing the left end of a stationary, closed-circuit solenoid. In Trial 1, the bar magnet is moved to the right toward the solenoid at a constant speed v. In Trial 2, the bar magnet is moved to the left away from the solenoid at the same constant speed v. Which of the following correctly identifies the magnetic pole induced at the left end of the solenoid and the direction of the magnetic force exerted by the solenoid on the bar magnet for each trial?

| Trial | Left End of Solenoid | Force on Magnet |
|---|---|---|
| 1 (Approaching) | ? | ? |
| 2 (Receding) | ? | ? |

![A horizontal diagram showing a rectangular bar magnet on the left and a cylindrical solenoid on the right. The bar magnet is divided into two halves, with the left half labeled N and the right half labeled S. A horizontal arrow pointing to the right above the magnet indicates its velocity v toward the solenoid. To the right of the magnet is a stationary cylindrical solenoid with five visible loops of wire forming a closed loop with a simple resistor symbol at the bottom. The left face of the solenoid is positioned directly across from the south pole of the bar magnet. No other labels, lines, text, or axes appear.](https://nerd-notes.com/wp-content/uploads/ubq-frq-generated/stem-fig-1-1790596673-2yNtEk.jpg)

- **A.** | Trial | Left End of Solenoid | Force on Magnet | |---|---|---| | 1 (Approaching) | North pole | To the right | | 2 (Receding) | South pole | To the left |
- **B.** | Trial | Left End of Solenoid | Force on Magnet | |---|---|---| | 1 (Approaching) | South pole | To the right | | 2 (Receding) | North pole | To the left |
- **C.** | Trial | Left End of Solenoid | Force on Magnet | |---|---|---| | 1 (Approaching) | South pole | To the left | | 2 (Receding) | North pole | To the right |
- **D.** | Trial | Left End of Solenoid | Force on Magnet | |---|---|---| | 1 (Approaching) | North pole | To the left | | 2 (Receding) | South pole | To the right |

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/123203/*