Conceptual Physics (12th Edition)

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

Chapter 25 - Think and Explain: 52

Answer

The armature of a motor spins, transforming electrical energy to mechanical energy. The spinning coils, moving in a magnetic field, also induce a voltage (tending to drive electric current in the opposite direction). Thus a motor also tends to act as a generator.

Work Step by Step

If you are interested in further investigation, the term to look up is "back emf".
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