What is the resistance of a regular 75-W lightbulb connected to a 120-V AC outlet? A) 190 Ω B) 1.6 Ω C) 0.62 Ω D) 5.2 × 10^-³ Ω E) 270 Ω

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Quizplus · Accepted Answer

The resistance can be calculated using the formula P = V²/R, where P is power and V is voltage. Rearranging gives R = V²/P. Substituting the given values, R = 120²/75 = 14400/75 = 192 Ω, which is closest to 190 Ω.

What Is the Resistance of a Regular 75-W Lightbulb Connected