All of the following factors increase the magnitude of power loss in a conducting material due to the effect of eddy current EXCEPT
Correct answer: D. increase the thickness.
- A. low resistivity.
- B. decrease the area.
- C. strong magnetic field.
- D. increase the thickness.
Explanation
Eddy currents result in power loss in conducting materials due to the resistance encountered by the circulating currents. Increasing the thickness of the material increases the distance for eddy currents to travel, which reduces power loss. The other options either directly or indirectly contribute to increasing power loss in conducting materials.
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About Faraday's Law
Faraday's law states that an induced electromotive force equals the rate of change of magnetic flux linkage through a circuit. Questions cover changing field, area, angle or motion, the negative sign associated with Lenz's law, and the distinction between induced emf and the current that may flow in a closed circuit.
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