Two parallel wires carry a current I in the same direction. Midway between these wire is a third wire, also parallel to the other two, which carries a current 0.5 I, but in the direction opposite from the first two wires. In which direction are the net forces on the outer wires?

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)...
icon
Related questions
Question
Title: Analysis of Forces on Parallel Wires with Opposing Currents

---

**Problem Statement:**

Consider two parallel wires carrying a current \( I \) in the same direction. Positioned midway between these two wires is a third wire, also parallel, carrying a current \( 0.5 \, I \) in the opposite direction to the first two wires. Determine the direction of the net forces on the outer wires.

---

**Options:**

- **Option A:** Both forces on the two wires are in the same direction in space.
  
- **Option B:** Both forces are away from the center wire.
  
- **Option C:** Since the net forces are zero, there is no direction.
  
- **Option D:** Both forces are toward the center wire.

---

**Analysis:**

When analyzing the forces between current-carrying wires:

1. **Magnetic Forces Between Parallel Currents:** 
   - Parallel currents attract, while anti-parallel currents repel each other.

2. **Interaction Details:**
   - The two outer wires attract each other because their currents are in the same direction.
   - Each outer wire is repelled by the center wire because the center wire carries current in the opposite direction.

3. **Net Force Consideration:**
   - Due to the differing magnitudes and directions of forces, careful analysis and vector summation are required to determine net forces.

By applying the right-hand rule and superposition principle, the net effect on each outer wire can be deduced as either toward or away from the center wire. The specific directionality is determined by the relative strengths of the attraction and repulsion forces.

Given this explanation and understanding of electromagnetic theory, students are expected to choose the correct option based on calculated net forces.

---

**Conclusion:**

Students should apply concepts of magnetic force interactions and vector analysis to correctly conclude whether the net forces on the outer wires are toward or away from the center wire.
Transcribed Image Text:Title: Analysis of Forces on Parallel Wires with Opposing Currents --- **Problem Statement:** Consider two parallel wires carrying a current \( I \) in the same direction. Positioned midway between these two wires is a third wire, also parallel, carrying a current \( 0.5 \, I \) in the opposite direction to the first two wires. Determine the direction of the net forces on the outer wires. --- **Options:** - **Option A:** Both forces on the two wires are in the same direction in space. - **Option B:** Both forces are away from the center wire. - **Option C:** Since the net forces are zero, there is no direction. - **Option D:** Both forces are toward the center wire. --- **Analysis:** When analyzing the forces between current-carrying wires: 1. **Magnetic Forces Between Parallel Currents:** - Parallel currents attract, while anti-parallel currents repel each other. 2. **Interaction Details:** - The two outer wires attract each other because their currents are in the same direction. - Each outer wire is repelled by the center wire because the center wire carries current in the opposite direction. 3. **Net Force Consideration:** - Due to the differing magnitudes and directions of forces, careful analysis and vector summation are required to determine net forces. By applying the right-hand rule and superposition principle, the net effect on each outer wire can be deduced as either toward or away from the center wire. The specific directionality is determined by the relative strengths of the attraction and repulsion forces. Given this explanation and understanding of electromagnetic theory, students are expected to choose the correct option based on calculated net forces. --- **Conclusion:** Students should apply concepts of magnetic force interactions and vector analysis to correctly conclude whether the net forces on the outer wires are toward or away from the center wire.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Knowledge Booster
Magnetic field
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
College Physics
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
Physics for Scientists and Engineers
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:
9780321820464
Author:
Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:
Addison-Wesley
College Physics: A Strategic Approach (4th Editio…
College Physics: A Strategic Approach (4th Editio…
Physics
ISBN:
9780134609034
Author:
Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:
PEARSON