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 32RQ
What is the resistance of the heating element of an electric iron if the ampere draw is 8 amperes when 115 volts are applied?
- a. 10 ohms
- b. 12 ohms
- c. 14 ohms
- d. 16 ohms
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Students have asked these similar questions
An electric kettle is required to raise the temperature of 2 kg of water from 20ºC to 100ºC in 15 minutes. Calculate the resistance of the heating element if the kettle is to be used on a 240 volts supply. Assume the efficiency of the kettle to be 80%.a.72 ohmsc.83 ohms
b.62 ohmsd.93 ohms
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 ohm
17. Three resistors of 3, 4 and 5 1 poini
ohms each are connected in
parallel. What is the equivalent
resistance? *
O 1.3 ohms
O 6.7 ohm
O 12 ohms
O .08 ohms
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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- While 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_forwardIf the resistance in a 120-V circuit was 40 , what would the current be in amperes? A. 4800A B. 48A C. 4A D. 3Aarrow_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
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