Conceptual Physics: The High School Physics Program
9th Edition
ISBN: 9780133647495
Author: Paul G. Hewitt
Publisher: Prentice Hall
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 37, Problem 32A
Why is a generator armature more difficult to rotate when it is connected to and supplying
Expert Solution & Answer
To determine
To Explain: A generator armature is difficult to rotate when it is connected to the circuit and supplying electric current.
Answer to Problem 32A
The more work is required to rotate the armature against the opposing forces of electromagnets.
Explanation of Solution
Introduction:
The rotation of the armature is harder because when it is connected to the circuit and supplying the electric current then in that case, the armature has to work in the magnetic field produced by a current-carrying coil.
As the current increases in the circuit, the opposition decreases, and the amount of work done also increases to spin the armature. The work done in rotating the armature goes into the electrical energy supplied to the external circuit.
Chapter 37 Solutions
Conceptual Physics: The High School Physics Program
Ch. 37 - What did Michael Faraday and Joseph Henry...Ch. 37 - How can voltage be induced in a wire with the help...Ch. 37 - A magnet moved into a coil of wire will induce...Ch. 37 - Why is it more difficult to move a magnet into a...Ch. 37 - Current, as well as voltage, can be induced in a...Ch. 37 - How does the frequency of a changing magnetic...Ch. 37 - What is a generator, and how does it differ from a...Ch. 37 - Why is the voltage induced in an alternator AC...Ch. 37 - The armature of a generator must rotate in order...Ch. 37 - A motor is characterized by three main...
Ch. 37 - What does a transformer actually...Ch. 37 - What does a step-up transformer step up—voltage,...Ch. 37 - How does the relative number of turns on the...Ch. 37 - If the number of secondary turns is 10 times the...Ch. 37 - Prob. 15ACh. 37 - Why is it advantageous to transmit electric power...Ch. 37 - What fundamental quantity underlies the concepts...Ch. 37 - Distinguish between Faradays law expressed in...Ch. 37 - How do the wave speeds compare for high-frequency...Ch. 37 - Prob. 20ACh. 37 - The magnets are moved into the wire coils in...Ch. 37 - The transformers are all powered with 100 W, and...Ch. 37 - When Tim pushes the wire down between the poles of...Ch. 37 - A common pickup for an electric guitar consists of...Ch. 37 - Two separate but similar coils of wire are mounted...Ch. 37 - If you place a metal ring in a region in where a...Ch. 37 - A magician places an aluminum ring on a table,...Ch. 37 - How could you light a lightbulb that is near, yet...Ch. 37 - What is the basic difference between an electric...Ch. 37 - With no magnets around, why will current flow in a...Ch. 37 - What is the source of all electromagnetic waves?Ch. 37 - Why is a generator armature more difficult to...Ch. 37 - Your classmate says that, if you crank the shaft...Ch. 37 - Some bicycles have electric generators that are...Ch. 37 - An electric hair drier running at normal speed...Ch. 37 - When a piece of plastic tape coated with iron...Ch. 37 - Why is it important that the core of a transformer...Ch. 37 - Why can a hum often be heard when a transformer is...Ch. 37 - When a strip of magnetic material, variably...Ch. 37 - If a car made of iron and steel moves over a wide...Ch. 37 - Prob. 41ACh. 37 - How could you move a conducting loop of wire...Ch. 37 - Why does a transformer require alternating...Ch. 37 - How does the current in the secondary of a...Ch. 37 - In what sense can a transformer be thought of as...Ch. 37 - Can an efficient transformer step up energy?...Ch. 37 - A friend says that changing electric and magnetic...Ch. 37 - Would electromagnetic waves exist if changing...Ch. 37 - When a bar magnet is dropped through a vertical...Ch. 37 - What is wrong with this scheme? To generate...Ch. 37 - An electromagnet A with a coil of 10 turns...Ch. 37 - An electric doorbell requires 12 volts to operate...Ch. 37 - A model electric train requires 6 V to operate....Ch. 37 - If the output current for the above transformer is...Ch. 37 - A transformer has an input of 9 volts and an...Ch. 37 - A model electric train requires a low voltage to...Ch. 37 - Prob. 57ACh. 37 - Prob. 58ACh. 37 - Neon signs require about 12,000 V for their...
Additional Science Textbook Solutions
Find more solutions based on key concepts
10.71 Identify each of the following as an acid or a base: (10.1)
H2SO4
RbOH
Ca(OH)2
HI
...
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
In your own words, briefly distinguish between relative dates and numerical dates.
Applications and Investigations in Earth Science (9th Edition)
15. An astronaut’s weight on earth is 800 N. What is his weight on Mars, where g = 3.76 m/s2
College Physics: A Strategic Approach (3rd Edition)
48. Four solutions of unknown NaOH concentration are titrated with solutions of HCl. The following table lists ...
Introductory Chemistry (6th Edition)
Define histology.
Fundamentals of Anatomy & Physiology (11th Edition)
5. When the phenotype of heterozygotes is intermediate between the phenotypes of the two homozygotes, this patt...
Biology: Life on Earth (11th Edition)
Knowledge Booster
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
- 3.63 • Leaping the River II. A physics professor did daredevil stunts in his spare time. His last stunt was an attempt to jump across a river on a motorcycle (Fig. P3.63). The takeoff ramp was inclined at 53.0°, the river was 40.0 m wide, and the far bank was 15.0 m lower than the top of the ramp. The river itself was 100 m below the ramp. Ignore air resistance. (a) What should his speed have been at the top of the ramp to have just made it to the edge of the far bank? (b) If his speed was only half the value found in part (a), where did he land? Figure P3.63 53.0° 100 m 40.0 m→ 15.0 marrow_forwardPlease solve and answer the question correctly please. Thank you!!arrow_forwardYou throw a small rock straight up from the edge of a highway bridge that crosses a river. The rock passes you on its way down, 5.00 s after it was thrown. What is the speed of the rock just before it reaches the water 25.0 m below the point where the rock left your hand? Ignore air resistance.arrow_forward
- Help me make a visualize experimental setup using a word document. For the theory below.arrow_forwardHow to solve this, given answerarrow_forwardThree point-like charges are placed at the corners of a square as shown in the figure, 28.0 cm on each side. Find the minimum amount of work required by an external force to move the charge q1 to infinity. Let q1=-2.10 μC, q2=+2.40 μС, q3=+3.60 μC.arrow_forward
- A point charge of -4.00 nC is at the origin, and a second point charge of 6.00 nC is on the x axis at x= 0.820 mm . Find the magnitude and direction of the electric field at each of the following points on the x axis. x2 = 19.0 cmarrow_forwardFour point-like charges are placed as shown in the figure, three of them are at the corners and one at the center of a square, 36.0 cm on each side. What is the electric potential at the empty corner? Let q1=q3=+26.0 µС, q2=-28.0 μC, and q4=-48.0μc Varrow_forwardPLS HELparrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
University Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSON
Introduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Lecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-Wesley
College Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
University Physics (14th Edition)
Physics
ISBN:9780133969290
Author:Hugh D. Young, Roger A. Freedman
Publisher:PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:9781107189638
Author:Griffiths, David J., Schroeter, Darrell F.
Publisher:Cambridge University Press
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
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...
Physics
ISBN:9780134609034
Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:PEARSON
What is Electromagnetic Induction? | Faraday's Laws and Lenz Law | iKen | iKen Edu | iKen App; Author: Iken Edu;https://www.youtube.com/watch?v=3HyORmBip-w;License: Standard YouTube License, CC-BY