Two bulbs rated 100 W and 60 W are designed for the same supply voltage. Compared with the 60 W bulb, the 100 W bulb has:
Aa higher resistance
Bzero resistance
Cthe same resistance
Da lower resistance
Answer & Solution
Correct answer: D. a lower resistance
At a fixed voltage P = V²/R, so the higher-power (100 W) bulb must have the lower resistance.
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