Conceptual Physics (12th Edition)

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

Chapter 25 - Think and Explain - Page 482-483: 56


See below.

Work Step by Step

As the non-uniformly-magnetized tape passes the pickup coil, it changes the magnetic field within the coil. This induces a voltage in the coil, which can amplified and played through speakers. A practical application of this is using magnetic tape to record audio (reel to reel, or cassette tapes) or video (VHS tapes) signals.
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