Question Detail
Question
A certain resistor dissipates 0.5 W when connected to 3 V. When connected to 1 V, it will dissipate:
Correct Answer
Option D is the correct answer.
Detailed Explanation
R = V²/P = 9/0.5 = 18 Ω. P = V²/R = 1/18 = 0.0556 W ≈ 0.056 W.
Hint
P = V²/R.