Conceptual Physics (12th Edition)

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

Chapter 23 - Think and Explain: 79


Assuming the materials are the same, the thicker filament has less electrical resistance. When hooked up to the same voltage source as a skinny lamp filament, the thicker filament draws more current.

Work Step by Step

We apply Ohm's Law. $$Current = \frac{voltage}{resistance}$$ Lower resistance means more current. This is stated on pages 433-434.
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