College Physics (7th Edition)

Published by Pearson
ISBN 10: 0-32160-183-1
ISBN 13: 978-0-32160-183-4

Chapter 19 - Magnetism - Learning Path Questions and Exercises - Conceptual Questions - Page 690: 24

Answer

There are two wires carrying the current in and out of the appliances. These two currents are in opposite directions. When two wires are very close to each other, the magnetic fields created by the two opposite currents essentially cancel.

Work Step by Step

There are two wires carrying the current in and out of the appliances. These two currents are in opposite directions. When two wires are very close to each other, the magnetic fields created by the two opposite currents essentially cancel.
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