the resis†an ce of the filament of a lamp increases with increase in temp. A lamp rated 100W and 220V is connected across 220Vpower supply ,if voltage drops by 10 percent ,then the power of lamp. 1.90W 2.81W 3.between 90W and 100W 4. between 81W and 90W

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Q. The resistance of the filament of a lamp increases with the increase in temperature. A lamp rated

100 W

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Q. Question 15
Two lamps, one rated 100 W at 220 V, and the other 60 W at 220 V, are connected in parallel to an electric mains supply. What current is drawn from the line if the supply voltage is 220 V?

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