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 7, Problem 1RQ
Alternating current is __________.
- a. an alternating flow of electrons
- b. electrons reversing their flow at regular intervals
- c. the most commonly used current
- d. all of the above
Expert Solution & Answer
To determine
Alternating current is
Explanation of Solution
Alternating current is the flow of electric charge in both positive and negative directions.
In other words, the flow of electric charge which shifts its direction with respect to time is known as alternating current.
Hence, the correct answer is “option d. all the above”.
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Students have asked these similar questions
The current in a component is reduced
uniformly from 100mA to 20mA over a
period of 8.0s.What is the charge that
flows during this time?
Оа.
O a. 480 mC
O b. 640 mC
Ос.
320 mC
O d. 160 mC
34- Energies of the electromagnetic radiation in the visible range of light (white light) vary between
1.8 eV (red light) and 3.1 eV (blue light). If white light impinges (hit) on the surface of a non-conducting
material having Egap-2.5 eV, which one of the following is observed?
All the electromagnetic radiation is absorbed by the material.
A-
Partial absorption of visible light happens, and the material is colored.
All the electromagnetic radiation is reflected on the surface of the material.
None of the electromagnetic radiation is absorbed, and the material is transparent.
B-
C-
D-
E-
None of the choices above are correct.
No need to explain. Just please answer the 2 questions, thank you.
Chapter 7 Solutions
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
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