A negatively charged particle is moving with a constant velocity directed upward through a region of a uniform magnetic field B directed into the page as shown in the figure. In which direction must an electric field be applied to keep the particle moving along a straight line? XB Select one: a.Upward b.Out of the page c. To the leftin the plane of the page d.Into the page e.To the right in the plane of the page f.Downward

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
### Understanding the Interaction Between Magnetic and Electric Fields on a Moving Charged Particle

**Problem Statement:**

A negatively charged particle is moving with a constant velocity \( \vec{v} \) directed upward through a region of a uniform magnetic field \( \vec{B} \) directed into the page as shown in the figure below. In which direction must an electric field be applied to keep the particle moving along a straight line?

### Diagram:

The diagram illustrates the following:
- The negatively charged particle (marked with a minus sign "-" inside a circle).
- The velocity vector \( \vec{v} \) is directed upward (denoted by an arrow pointing upward).
- The magnetic field \( \vec{B} \) is directed into the page (denoted by an "X" symbol).

```plaintext
    ↑
    |   \(\vec{v}\)
    | 
    O   \(-\)
    │
    X   \(\vec{B}\)
    │
----------------------
```

### Answer Choices:

1. Upward
2. Out of the page
3. To the left in the plane of the page
4. Into the page
5. To the right in the plane of the page
6. Downward

### Answer Explanation:

To determine the direction in which the electric field must be applied, let’s understand the forces acting on the particle:

- **Magnetic Force**: For a negatively charged particle moving in a magnetic field, the force \( \vec{F}_B \) is given by the equation: \( \vec{F}_B = q (\vec{v} \times \vec{B}) \).
  - Since the charge is negative (\( q < 0 \)), the direction of \( \vec{F}_B \) is opposite to the conventional right-hand rule.
  - The particle is moving upward (\( \vec{v} \) directed up) and the magnetic field (\( \vec{B} \)) is directed into the page.
  - Thus, the force on the particle due to the magnetic field will be directed to the right of the plane of the page.

- **Electric Force**: To counteract the magnetic force and keep the particle moving in a straight line, an electric force \( \vec{F}_E \) must be applied in the opposite direction of the magnetic force.
  - Given that the magnetic force is
Transcribed Image Text:### Understanding the Interaction Between Magnetic and Electric Fields on a Moving Charged Particle **Problem Statement:** A negatively charged particle is moving with a constant velocity \( \vec{v} \) directed upward through a region of a uniform magnetic field \( \vec{B} \) directed into the page as shown in the figure below. In which direction must an electric field be applied to keep the particle moving along a straight line? ### Diagram: The diagram illustrates the following: - The negatively charged particle (marked with a minus sign "-" inside a circle). - The velocity vector \( \vec{v} \) is directed upward (denoted by an arrow pointing upward). - The magnetic field \( \vec{B} \) is directed into the page (denoted by an "X" symbol). ```plaintext ↑ | \(\vec{v}\) | O \(-\) │ X \(\vec{B}\) │ ---------------------- ``` ### Answer Choices: 1. Upward 2. Out of the page 3. To the left in the plane of the page 4. Into the page 5. To the right in the plane of the page 6. Downward ### Answer Explanation: To determine the direction in which the electric field must be applied, let’s understand the forces acting on the particle: - **Magnetic Force**: For a negatively charged particle moving in a magnetic field, the force \( \vec{F}_B \) is given by the equation: \( \vec{F}_B = q (\vec{v} \times \vec{B}) \). - Since the charge is negative (\( q < 0 \)), the direction of \( \vec{F}_B \) is opposite to the conventional right-hand rule. - The particle is moving upward (\( \vec{v} \) directed up) and the magnetic field (\( \vec{B} \)) is directed into the page. - Thus, the force on the particle due to the magnetic field will be directed to the right of the plane of the page. - **Electric Force**: To counteract the magnetic force and keep the particle moving in a straight line, an electric force \( \vec{F}_E \) must be applied in the opposite direction of the magnetic force. - Given that the magnetic force is
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps

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
  • SEE MORE 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