Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Part 5 - Multiple-Choice Practice Exam: 25

Answer

The metal detectors that people walk through at airports operate via Faraday's law.

Work Step by Step

A changing magnetic field induces a current in any metal that a person may be carrying, as predicted by Faraday's Law. The resulting magnetic field is detected.
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