Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN: 9781337399128
Author: Russell E. Smith
Publisher: Cengage Learning
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Textbook Question
Chapter 2, Problem 33RQ
What is the voltage of a small electric heater if the heater is drawing 12 amperes and has a resistance of 10 ohms?
- a. 120 volts
- b. 240 volts
- c. 60 volts
- d. none of the above
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Chapter 2 Solutions
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
Ch. 2 - All physical objects are composed of __________....Ch. 2 - What is an atom?Ch. 2 - Which of the following is a part of the atom? a....Ch. 2 - What is static electricity?Ch. 2 - Name three ways electricity can be produced.Ch. 2 - What part do protons and electrons play in the...Ch. 2 - Which of the following is the simplest atom that...Ch. 2 - What are the four most important characteristics...Ch. 2 - What is electromotive force?Ch. 2 - Electromotive force is commonly measured in _____....
Ch. 2 - What is current?Ch. 2 - How is current measured? a. amperes b. ohms c....Ch. 2 - What is resistance?Ch. 2 - How is resistance commonly measured? a. amperes b....Ch. 2 - What is electrical power?Ch. 2 - How is electrical power commonly measured? a....Ch. 2 - Where do electrons exist in an atom, and what is...Ch. 2 - True or False: All atoms tend to lose electrons.Ch. 2 - State the law of electric charges.Ch. 2 - What is a proton? Where does it normally exist in...Ch. 2 - Describe briefly the method a dry cell battery...Ch. 2 - What is a conductor?Ch. 2 - Which of the following is the best conductor? a....Ch. 2 - What is an insulator?Ch. 2 - Which of the following is the best insulator? a....Ch. 2 - Why do metals make the best conductors?Ch. 2 - How do electric utility companies charge customers...Ch. 2 - What is the meaning of SEER when used in...Ch. 2 - State Ohms law.Ch. 2 - True or False: Ohms law applies to all types of...Ch. 2 - What is the ampere draw of a 5000-watt electric...Ch. 2 - What is the resistance of the heating element of...Ch. 2 - What is the voltage of a small electric heater if...Ch. 2 - What is the Btu/hour output of an electric heater...Ch. 2 - What is the kilowatt output of an electric heater...
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- If the resistance in a 120-V circuit was 40 , what would the current be in amperes? A. 4800A B. 48A C. 4A D. 3Aarrow_forwardOhm's law for determining voltage is _______.arrow_forwardWhile discussing current flow: Technician A says that current results from electrons being attracted to protons. Technician B says that for practical purposes, it is best to remember that current flows from a point of higher potential to a point of lower potential. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forward
- Electrical shorts are commonly caused by Select one: a. Wire movement b. heat melting the insulation c. Accident d. allarrow_forwardVoltage can be described as ____________ .arrow_forwardWhile discussing voltage Technician A says that voltage is the force developed by the attraction of the electrons to protons. Technician B says that the force developed by the attraction of electrons to protons is called electromotive force and it is measured in volts. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forward
- What does the voltage measurement across the conductor indicate? HAL 3.01 v The wire has high resistance. The wire is okay. The wire is open. The wire condition can't be determine.arrow_forwardWhat is a transformer?arrow_forwardWhat is the Btu/hour output of an electric heater rated at 15 kilowatts?a. 51.15 Btu/hourb. 51,150 Btu/hourc. 5115 Btu/hourd. none of the abovearrow_forward
- Calculate the equivalent resistance between A and B. A 3 ohm 9-ohm 5 ohm 4 ohm B 1.5 ohm O a. 1.5 ohm O b. 3.1 ohm c. 2.5 ohm O d. 2.2 ohmarrow_forwardA rotating magnetic field inside a set of conductingwires is a simple description of a __ .a. DC generatorb. AC generatorc. voltage regulatord. none of the abovearrow_forwardwhat is a thermistorarrow_forward
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