Answer
12 eV or 1.9 * 10^-18 J.
Work Step by Step
Since the electrons don’t (on average) gain kinetic energy as a result of this work done,
it is generally dissipated as heat. The answer is as in part (b): 12 eV or $1.9 * 10^(-18) J.$
Fundamentals of Physics Extended (10th Edition)
by Halliday, David; Resnick, Robert; Walker, Jearl
Published by
Wiley
ISBN 10:
1-11823-072-8
ISBN 13:
978-1-11823-072-5
Chapter 26 - Current and Resistance - Problems - Page 768: 42c
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