Question Detail
Question
In an antique auto, a 6V battery supplies 48W to two identical headlights in parallel. Resistance of each bulb?
Correct Answer
Option B is the correct answer.
Detailed Explanation
Total power = 48W, V = 6V. R_total = V²/P = 36/48 = 0.75Ω. Two in parallel: 1/R_total = 2/R => R = 2 × 0.75 = 1.5Ω.
Hint
Total power = V²/R_total. Then find individual resistance.