10
Question
At a given time a house is supplied with 100 A at 220 V. How many 75 W, 220 V light bulbs could be switched on in the house at the same time (if they are all connected in parallel)?
At a given time a house is supplied with 100 A at 220 V. How many 75 W, 220 V light bulbs could be switched on in the house at the same time (if they are all connected in parallel)?
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Solution
let we consider x bulb in parallel then P= VI
power of 1 bulb = 75 ( given)
power of x bulbs = 75x
P=VI
75X = 220×100
X = (220 × 100)/ 75
=293.333 ≅ 293 bulbs
let we consider x bulb in parallel then P= VI
power of 1 bulb = 75 ( given)
power of x bulbs = 75x
P=VI
75X = 220×100
X = (220 × 100)/ 75
=293.333 ≅ 293 bulbs
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