Two bulbs 25W, 220V and 100W, 220V are given. Which has higher resistance? *
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Answer:
Bulb rated 25W ,220V has higher resistance.
Explanation:
R1 = V²/P1 = 220²/25 = 1936ohm
R2 = V²/P2 = 220²/100 = 484ohm
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