Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 18 - Electric Currents - Questions: 11


The 100 W bulb draws more current. The 75 W bulb has more resistance.

Work Step by Step

Assuming that both lightbulbs are used at the same voltage, the power equation P = IV shows that the higher-power 100 W bulb draws more current. Using the power equation $P=\frac{V^{2}}{R}$, we see that the lower-power 75 W bulb has a higher resistance, which makes sense because it draws less current.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.