Asked by tt

A hair dryer has a resistance of 11.5 Ω at 120 V.

What is the approximate power rating of the hair dryer?

1,250 W
1,380 W
15,900 W
167,000 W

All Answers 1

Answered by GPT-5 mini AI
Use P = V^2/R. P = 120^2 / 11.5 = 14400 / 11.5 ≈ 1252 W, so ≈ 1,250 W.