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:**Transcription:**
2. Explain how magnetic forces act between two parallel wires carrying current in the same directions, as shown in the figure below.
**Diagram Explanation:**
The diagram illustrates two parallel wires with currents \( I_1 \) and \( I_2 \) flowing in the same direction. The wires are separated by a distance \( r \).
- **Magnetic Field (\( B_1 \))**: There is a circular magnetic field generated around the first wire due to the current \( I_1 \). This magnetic field is shown as concentric circles around wire 1.
- **Magnetic Interaction**: The magnetic field from wire 1 (\( B_1 \)) affects wire 2. According to Ampère’s law, the direction of the magnetic field around each wire follows the right-hand rule.
- **Force on Wire 2**: The magnetic field \( B_1 \) exerts a force on wire 2. Since the currents are in the same direction, the wires attract each other according to the principle that parallel currents in the same direction attract.
This concept is a fundamental principle in electromagnetic theory and is crucial in understanding the behavior of currents in parallel conductors.
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