College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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
Transcribed Image Text:**Magnetic Field Configurations: An Educational Overview**
**Question 105:**
Which diagram correctly shows a magnetic field configuration?
This educational resource provides four diagrams, each depicting a different configuration of a magnetic field around a magnet. Let's explore each configuration to understand which one accurately represents the magnetic field lines.
**Diagram Descriptions:**
1. **Diagram (1):** This diagram displays a straight bar magnet with the north (N) and south (S) poles indicated. The magnetic field lines emerge from the north pole and curve around the bar magnet to enter the south pole. This configuration is consistent with the general understanding that magnetic field lines leave the north pole and enter the south pole in a continuous loop.
2. **Diagram (2):** This illustration shows a straight bar magnet with the north (N) and south (S) poles. However, in this configuration, the magnetic field lines seem to emerge perpendicularly from both poles without forming a curved path to the opposite pole. This depiction does not accurately reflect how magnetic field lines typically behave.
3. **Diagram (3):** Here, a horseshoe magnet is depicted, with the north (N) and south (S) poles on either end of the U-shape. The magnetic field lines leave the north pole and enter the south pole, forming arcs that connect both poles. This is a correct representation of the magnetic field around a horseshoe magnet, where the field lines curve from one pole to the other following a shorter path due to the magnet's shape.
4. **Diagram (4):** This diagram also shows a horseshoe magnet, but it mistakenly depicts the magnetic field lines emerging from both the north (N) and south (S) poles and not forming a coherent loop between them. This configuration does not accurately portray the nature of magnetic fields.
**Conclusion:**
The correct diagrams that show magnetic field configurations accurately are **(1)** and **(3)**. Diagram **(1)** depicts the typical field lines around a bar magnet, while diagram **(3)** accurately shows the field around a horseshoe magnet.
By understanding these diagrams, students can gain insights into the fundamental characteristics of magnetic fields, particularly how they emerge from the north pole and enter the south pole following specific patterns.
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