Conceptual Physics (12th Edition)

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

Chapter 24 - Think and Explain: 54

Answer

The compass needle points perpendicular to the wire (either east or west).

Work Step by Step

Just such a situation is shown in Figure 24.8. The needle is perpendicular to the wire.
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