A "unipolar" generator consists of a copper disk of radius R. rotating in a uniform, steady magnetic field B perpendicular to the disk, out of the page (see the figure below). (The magnetic field is produced by large coils carrying constant current, not shown in the diagram.) Sliding contacts are made at the center (on the axle) and at the rim of the disk, and the wires are connected to a voltmeter. Uniform, steady B, out of page Radius R Voltmeter (a) Draw the charge distribution. (b) Explain your reasoning.
A "unipolar" generator consists of a copper disk of radius R. rotating in a uniform, steady magnetic field B perpendicular to the disk, out of the page (see the figure below). (The magnetic field is produced by large coils carrying constant current, not shown in the diagram.) Sliding contacts are made at the center (on the axle) and at the rim of the disk, and the wires are connected to a voltmeter. Uniform, steady B, out of page Radius R Voltmeter (a) Draw the charge distribution. (b) Explain your reasoning.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
Related questions
Concept explainers
Synchronous Generator
In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.
Salient Pole Rotor
Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.
Question
show details, please

Transcribed Image Text:**Unipolar Generator Explanation**
The diagram illustrates a "unipolar" generator, which is composed of a rotating copper disk with a radius \( R \) within a uniform, steady magnetic field \( B \). This magnetic field is perpendicular to the disk and directed into the page. The magnetic field is generated by large coils with a constant current (not shown in the diagram). Sliding contacts are connected at the disk's center (on the axle) and the disk's rim, and these are linked to a voltmeter.
**Diagram Analysis:**
- The copper disk is depicted as a gray circle with radius \( R \).
- A uniform magnetic field \( B \) is shown out of the page (denoted by a circle with a dot at the top of the disk).
- The disk rotates counterclockwise with velocity \( \vec{v} \) (indicated by a green arrow along the rim's direction).
- The sliding contacts are illustrated by black and red lines connecting the center and the edge of the disk to a voltmeter.
- The voltmeter is represented by a gray box with a question mark symbol inside, indicating the measurement input is to be determined.
**Problem Instructions:**
(a) **Draw the charge distribution.**
- Identify regions of positive and negative charges on the disk due to its rotation in the magnetic field.
(b) **Explain your reasoning.**
- Provide a detailed explanation of the physics and concepts behind the charge distribution observed on the rotating disk, using principles such as electromagnetic induction and the Lorentz force.
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 3 images

Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you

Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON

Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning

Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education

Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON

Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning

Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education

Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education

Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON

Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,