Physical Science (12th Edition), Standalone Book
12th Edition
ISBN: 9781260150544
Author: Bill W. Tillery
Publisher: McGraw Hill Education
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 6, Problem 12AC
A kilowatt-hour is a unit of
a. power.
b. work.
c. current.
d. potential difference.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
what is another form of the unit voltage?
a. J times c
b. N/C
c. J/C
d. V/m
Which of the following are the proper units for the electric potential?
a.
J/C
b.
J
c.
N/C
d.
C/J
e.
V/m
Birds can safely stand on high voltage electric power lines. This is because ____.
a. they are at low potential with respect to the ground.
b. they offer no resistance to current.
c. they always choose power lines that are not in use.
d. the potential difference between their feet is low.
e. they are perfect insulators.
f. they are perfect conductors.
Chapter 6 Solutions
Physical Science (12th Edition), Standalone Book
Ch. 6 - 1. Electrostatic charge results from
a. transfer...Ch. 6 - 2. The unit of electric charge is the
a. volt.
b....Ch. 6 - 3. An electric field describes the condition of...Ch. 6 - 4. A material that has electrons that are free to...Ch. 6 - 5. An example of an electrical insulator is
a....Ch. 6 - 6. The electrical potential difference between two...Ch. 6 - 7. The rate at which an electric current flows...Ch. 6 - 8. The law that predicts the behavior of...Ch. 6 - 9. What type of electric current is produced by...Ch. 6 - 10. The electrical resistance of a conductor is...
Ch. 6 - 11. According to Ohm’s law, what must be greater...Ch. 6 - 12. A kilowatt-hour is a unit of
a. power.
b....Ch. 6 - 13. If you multiply volts by amps, the answer will...Ch. 6 - 14. Units of joules per second are a measure...Ch. 6 - 15. A lodestone is a natural magnet that...Ch. 6 - The north pole of a suspended or floating bar...Ch. 6 - 17. A current-carrying wire always has
a. a...Ch. 6 - 18. Magnetism is produced by
a. an excess of north...Ch. 6 - 19. Earth's magnetic field
a. has undergone many...Ch. 6 - 20. The strength of a magnetic field around a...Ch. 6 - 21. Reverse the direction of a current in a wire,...Ch. 6 - 22. The operation of which of the following...Ch. 6 - Prob. 23ACCh. 6 - When a loop of wire cuts across magnetic field...Ch. 6 - 25. A step-up transformer steps up the
a....Ch. 6 - Prob. 26ACCh. 6 - 27. Electric power companies step up the voltage...Ch. 6 - 28. A solar cell
a. produces electricity...Ch. 6 - 29. Which of the following is most likely to...Ch. 6 - 30. Which of the following units are measures of...Ch. 6 - 31. You are using which description of a current...Ch. 6 - 32. In an electric current, the electrons are...Ch. 6 - 33. In which of the following currents is there no...Ch. 6 - Prob. 34ACCh. 6 - 35. A permanent magnet has magnetic properties...Ch. 6 - 36. A current-carrying wire has a magnetic field...Ch. 6 - 37. When an object acquires a negative charge, it...Ch. 6 - 38. A positive and a negative charge are initially...Ch. 6 - 39. To be operational, a complete electric circuit...Ch. 6 - 40. Which variable is inversely proportional to...Ch. 6 - 41. Which of the following is not considered to...Ch. 6 - 42. A piece of iron can be magnetized or...Ch. 6 - 43. Earth’s magnetic field is believed to...Ch. 6 - 44. Electromagnetic induction takes place...Ch. 6 - 45. The current in the secondary coil of a...Ch. 6 - 46. An electromagnet uses.
a. a magnetic field to...Ch. 6 - 47. A transformer.
a. changes the voltage of a...Ch. 6 - 48. A parallel circuit has
a. wires that are lined...Ch. 6 - 49. In which type of circuit would you expect a...Ch. 6 - 50. In which type of circuit would you expect the...Ch. 6 - 1. Explain why a balloon that has been rubbed...Ch. 6 - 2. Explain what is happening when you walk across...Ch. 6 - 3. Why does a positively or negatively charged...Ch. 6 - 4. Explain how you that it is an electric field,...Ch. 6 - 5. Is a kWh a unit of power or a unit of work?...Ch. 6 - 6. What is the difference between ac and dc?
Ch. 6 - Prob. 7QFTCh. 6 - 8. How is an unmagnetized piece of iron different...Ch. 6 - 9. Explain why the electric utility company...Ch. 6 - 10. Describe how an electric generator is able to...Ch. 6 - Prob. 11QFTCh. 6 - 12. Explain what causes an electron to move toward...Ch. 6 - 1. Explain how the model of electricity as...Ch. 6 - 2. What are the significant similarities and...Ch. 6 - 3. Transformers usually have signs warning,...Ch. 6 - 4. Will a fuel cell be the automobile engine of...Ch. 6 - 5. Analyze the apparent contradiction in the...Ch. 6 - 6. What are the basic similarities and differences...Ch. 6 - 7. What are the advantages and disadvantages of...Ch. 6 - A rubber balloon has become negatively charged...Ch. 6 - Prob. 2PEACh. 6 - Prob. 3PEACh. 6 - Prob. 4PEACh. 6 - Prob. 5PEACh. 6 - Prob. 6PEACh. 6 - Prob. 7PEACh. 6 - Prob. 8PEACh. 6 - Prob. 9PEACh. 6 - Prob. 10PEACh. 6 - Prob. 11PEACh. 6 - Prob. 12PEACh. 6 - Prob. 13PEACh. 6 - Prob. 14PEACh. 6 - Prob. 15PEACh. 6 - Prob. 16PEACh. 6 - Prob. 17PEACh. 6 - 1. An inflated rubber balloon is rubbed with a...Ch. 6 - 2. What is the force between two balloons with a...Ch. 6 - 3. How much energy is available from a 12 V...Ch. 6 - 4. A wire carries a current of 2.0 A. at what rate...Ch. 6 - Prob. 5PEBCh. 6 - 6. There is a current of 0.83 A through a...Ch. 6 - 7. What is the voltage across a 60.0 resistor with...Ch. 6 - 7. What is the voltage across a 60.0 resistor...Ch. 6 - 9. A lightbulb designed to operate in a 120.0 V...Ch. 6 - 10. What is the monthly energy cost of leaving a...Ch. 6 - 11. An electric motor draws a current of 11.5 A in...Ch. 6 - 12. A swimming pool requiring a 2.0 hp motor to...Ch. 6 - 13. Is it possible for two people to...Ch. 6 - 14. A step-up transformer has a primary coil with...Ch. 6 - 15. The step-down transformer in a local...Ch. 6 - 16. A step-down transformer connected to a 120 V...Ch. 6 - 17. What is the power of an 8.0-ohm bulb when...
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
- The immediate cause of many deaths is ventricular fibrillation, an uncoordinated quivering of the heart, as opposed to proper beating. An electric shock to the chest can cause momentary paralysis of the heart muscle, after which the heart will sometimes start organized beating again. A defibrillator is a device that applies a strong electric shock to the chest over a time of a few milliseconds. The device contains a capacitor of a few microfarads, charged to several thousand volts. Electrodes called paddles, about 8 cm across and coated with conducting paste, are held against the chest on both sides of the heart. Their handles are insulated to prevent injury to the operator, who calls Clear! and pushes a button on one paddle to discharge the capacitor through the patient's chest Assume an energy of 3.00 102 W s is to be delivered from a 30.0-F capacitor. To what potential difference must it be charged?arrow_forwardA clock battery wears out after moving 10,000 C of charge through the clock at a rate of 0.500 mA. (a) How long did the clock run? (b) How many electrons per second flowed?arrow_forwardWhy do we need to be careful about work done on the system versus work done by the system in calculations?arrow_forward
- You are part of a team working in a machine parts mechanics shop. An important customer has asked your company to provide springs with a very precise force constant k. You dense the electrical circuit shown in Figure P25.45 to measure the spring constant of each of the springs to be provided to the customer. The circuit consists of two identical, parallel metal plates free to move, other than being connected to identical metal springs, a switch, and a battery with terminal voltage V. With the switch open, the plates are uncharged, are separated by a distance d, and have a capacitance C. When the switch is closed, the plates become charged and attract each other. The distance between the plates changes by a factor f, after which the plates are in equilibrium between the spring forces and the attractive electric force between the plates. To keep the plates from going into oscillations, you hold each plate with insulating gloves as the switch is closed and apply a force on the plates that allows them to move together at a slow constant speed until they are at the equilibrium separation, at which point you can release the plates. You determine an expression for the spring constant in terms of C, d, V, and f. Figure P25.45 Problems 45 and 50.arrow_forwardThe temperature near the center of the Sun is thought to be 15 million degrees Celsius ( 1.5107oC ) (or kelvin). Through what voltage must a singly charged ion be accelerated to have the same energy as the average kinetic energy of ions at this temperature?arrow_forwardConstruct Your Own Problem Consider a battery used to supply energy to a cellular phone. Construct a problem in which you determine the energy that must be supplied by the battery, and then calculate the amount of charge it must be able to move in order to supply this energy. Among the things to be considered are the energy needs and battery voltage. You may need to look ahead to interpret manufacturer’s battery ratings in ampere hours as energy in joules.arrow_forward
- Verify the energy unit equivalence that 1 kWh = 3.60106 J.arrow_forwardVoltage is defined as work per___. (8.2)arrow_forwardIn places such as hospital operating rooms or factories for electronic circuit boards, electric sparks must be avoided. A prison standing on a grounded floor and touching nothing else can typically have a body capacitance of 150 pF, in parallel with a foot capacitance of 80.0 pF produced by the dielectric soles of his or her shoes. The person acquires static electric charge from interactions with Ills or her surroundings. The static charge flows to ground through the equivalent resistance of the two shoe soles in parallel with each other. A pair of rubber-soled street shoes can present an equivalent resistance of 5.00 103 M. A pair of shoes with special static-dissipative soles can have an equivalent resistance of 1.00 M. Consider the persons body and shoes as forming an RC circuit with the ground. (a) How long does it take the rubber-soled shoes to reduce a persons potential from 3.00 103 V to 100? (b) How long does it take the static-dissipative shoes to do the same thing?arrow_forward
- What is the standard SI unit for electric potential energy? A. Joules B. Volt C. Coulomb D. Ampere In which situation would the system have the most electric potential energy? Initial Final A. Initial, more energy when together. B. Initial, more energy when apart. C. Final, more energy when together. D. Final, more energy when apart.arrow_forwardA. high number of electrons on the doorknob.B. discharge of an imbalance of electrons.C. highly conductive surface of the doorknob.D. low resistance of the person’s skin.arrow_forwardSelect the correct expression to describe the electromotive force - e.m.f. a. The e.m.f. of a source is the work done per charge. b. The e.m.f. of a source is the force between current-carrying wires. c. The e.m.f. of a source is the force between interacting electric charges. d. The e.m.f of a source is equal to the potential difference between the terminals of the source.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-HillAn Introduction to Physical SciencePhysicsISBN:9781305079137Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar TorresPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill
An Introduction to Physical Science
Physics
ISBN:9781305079137
Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Domestic Electric Circuits; Author: PrepOnGo Class 10 & 12;https://www.youtube.com/watch?v=2ZvWaloQ3nk;License: Standard YouTube License, CC-BY