Answer
Heating a metal wire increases its resistance.
When the metal is warmed up, its atoms jiggle around more, hindering electron motion and increasing the material's electrical resistance.
Work Step by Step
This is discussed on page 433.
Conceptual Physics (12th Edition)
by Hewitt, Paul G.
Published by
Addison-Wesley
ISBN 10:
0321909100
ISBN 13:
978-0-32190-910-7
Chapter 23 - Reading Check Questions (Comprehension) - Page 446-447: 9
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