Elements of Electromagnetics
7th Edition
ISBN: 9780190698669
Author: Sadiku
Publisher: Oxford University Press
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Chapter 5, Problem 1RQ
To determine
Choose the correct option from the given choices to mention which is not an example of convection current.
Expert Solution & Answer
Answer to Problem 1RQ
The correct option from the given choices is (d) Electric current flowing in a copper wire.
Explanation of Solution
Discussion:
Convection current is different from conduction current and does not include conductors and thus does not satisfy Ohm’s law. Convection current occurs when current flows through an insulating medium like rarefied gas, liquid, or a vacuum.
Few examples of convection current are a beam of electrons in a vacuum tube, television tube, and a moving charged belt.
Therefore, from the above explanation, electric current flowing in a copper wire is not an example of convection current. Hence, option (d) is correct and options (a), (b), and (c) are incorrect.
Conclusion:
Thus, the correct option from the given choices is (d) Electric current flowing in a copper wire.
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Water initially at 200 kPa and 300°C is contained in a piston-cylinder device fitted with stops. The water is allowed to cool
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Chapter 5 Solutions
Elements of Electromagnetics
Ch. 5.4 - Prob. 1PECh. 5.4 - Prob. 2PECh. 5.4 - Prob. 3PECh. 5.4 - Prob. 4PECh. 5.7 - Prob. 5PECh. 5.7 - Prob. 6PECh. 5.7 - Prob. 7PECh. 5.7 - Prob. 8PECh. 5.9 - Prob. 9PECh. 5.9 - Prob. 10PE
Ch. 5 - Prob. 1RQCh. 5 - Prob. 2RQCh. 5 - Prob. 3RQCh. 5 - Prob. 4RQCh. 5 - Prob. 5RQCh. 5 - Prob. 6RQCh. 5 - Prob. 7RQCh. 5 - Prob. 8RQCh. 5 - Prob. 9RQCh. 5 - Prob. 10RQCh. 5 - Prob. 1PCh. 5 - Prob. 2PCh. 5 - Prob. 3PCh. 5 - Prob. 4PCh. 5 - Prob. 5PCh. 5 - Prob. 6PCh. 5 - Prob. 7PCh. 5 - Prob. 8PCh. 5 - Prob. 9PCh. 5 - Prob. 10PCh. 5 - Prob. 11PCh. 5 - Prob. 12PCh. 5 - Prob. 13PCh. 5 - Prob. 14PCh. 5 - Prob. 15PCh. 5 - Prob. 16PCh. 5 - Prob. 17PCh. 5 - Prob. 18PCh. 5 - Prob. 19PCh. 5 - Prob. 20PCh. 5 - Prob. 21PCh. 5 - Prob. 22PCh. 5 - Prob. 24PCh. 5 - Prob. 25PCh. 5 - Prob. 26PCh. 5 - Prob. 27PCh. 5 - Prob. 28PCh. 5 - Prob. 29PCh. 5 - Prob. 30PCh. 5 - Prob. 31PCh. 5 - Prob. 32PCh. 5 - Prob. 33PCh. 5 - Prob. 34PCh. 5 - Prob. 35PCh. 5 - Prob. 36PCh. 5 - Prob. 37PCh. 5 - Prob. 40PCh. 5 - Prob. 42PCh. 5 - Prob. 43PCh. 5 - Prob. 44PCh. 5 - Prob. 46PCh. 5 - Prob. 47PCh. 5 - Prob. 48PCh. 5 - Prob. 49P
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