Elements of Electromagnetics
7th Edition
ISBN: 9780190698669
Author: Sadiku
Publisher: Oxford University Press
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Chapter 7, Problem 1RQ
To determine
Choose the correct option from the given choices that is not a source of magnetostatic fields.
Expert Solution & Answer
Answer to Problem 1RQ
The correct option from the given choices is (c) An accelerated charge.
Explanation of Solution
Description:
Charge movement with the constant velocity produces a static magnetic or magnetostatic field. The constant current flow or direct current tends to generate a magnetostatic field. Such a current flow can occur due to magnetization current as in permanent magnets or conduction current generated in current-carrying wires or an electron beam current generated as in vacuum tubes.
Therefore, it is clear that Options (a), (b), (d), and (e) are the sources of magnetostatic fields.
An accelerated charge is a charge that is moving with acceleration, which produces time-varying magnetic fields and not a magnetostatic field.
Thus, the accelerated charge is not a source of magnetostatic fields. Therefore, Option (c) is correct and Options (a), (b), (d), and (e) are incorrect.
Conclusion:
Thus, the correct option from the given choices is (c) An accelerated charge.
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Chapter 7 Solutions
Elements of Electromagnetics
Ch. 7.2 - Prob. 1PECh. 7.2 - Prob. 2PECh. 7.2 - Prob. 3PECh. 7.2 - Prob. 4PECh. 7.4 - Prob. 5PECh. 7.4 - Prob. 6PECh. 7.7 - Prob. 7PECh. 7.7 - Prob. 8PECh. 7 - Prob. 1RQCh. 7 - Prob. 2RQ
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