Conceptual Physics (12th Edition)

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

Chapter 22 - Reading Check Questions (Comprehension): 14

Answer

A semiconductor sometimes acts as a conductor, and sometimes as an insulator.

Work Step by Step

The properties can be altered by "doping" the semiconductor with foreign atoms, heating or cooling it, or shining light on it. This is discussed on pages 412-413.
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