Conceptual Physics (12th Edition)

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

Chapter 25 - Reading Check Questions (Comprehension): 22

Answer

The principal advantage of ac is the ease of stepping voltage up or down.

Work Step by Step

Power is best transmitted over long distances at very high voltage, but it would be dangerous to bring such high voltages into people's homes. This is discussed on pages 477 and 479.
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