two lamp one rated 60 W at 220V and the other 40W at 220V are connected in parallel to the electric supply at 220V calculate the total energy consumed by the two lamp together when they oprTed for one hour
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Two lamps, one rated 60w at 220V and the other 40W at 220V, are connected in parallel to the electric supply at 220V. a) Calculate the current drawn from the electric supply. b) Calculate the total energy consumed by the two lamps together when they operate for one hour.
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☆Energy consumed by 40 W bulb in 1 hour = 40w × 1
= 40 WH
Energy consumed by 60 W bulb in 1 hour = 60 w × 1 = 60 WH
》Total energy consumed by both bulbs = 40 + 60 => 100 WH = 0.1 Kwh
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