4
QuizMultiple Choice

Lab: Circuit Design

Question 4 • Crowley Credit Recovery Physics B

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

Answer
A
1,250 W
B
1,380 W
C
15,900 W
D
167,000 W

Explanation

Use the power formula P = V²/R. With 120 V and 11.5 Ω, P = 120²/11.5 ≈ 1,252 W, which rounds to 1,250 W.

AI-written and checked against the verified answer.

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