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.
Conceptual Physics (12th Edition)
by Hewitt, Paul G.
Published by
Addison-Wesley
ISBN 10:
0321909100
ISBN 13:
978-0-32190-910-7
Chapter 24 - Think and Explain - Page 467-468: 54
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