Answer
By exploiting the base current.
Work Step by Step
The small base current is used to switch the large collector current on or off. With no base current, there is no collector current.
Physics: Principles with Applications (7th Edition)
by Giancoli, Douglas C.
Published by
Pearson
ISBN 10:
0-32162-592-7
ISBN 13:
978-0-32162-592-2
Chapter 29 - Molecules and Solids - Questions - Page 852: 11
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