Conceptual Physics (12th Edition)

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

Chapter 24 - Think and Explain - Page 467-468: 34


Magnetic fields are caused by electric charges in motion.

Work Step by Step

Even for "permanent magnets" where no electric current is obvious, the field is still created because electrons are in motion: orbiting the nucleus, or "spinning" around their own axes. Thus, we may say that all magnets are electromagnets.
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