An electric bulb is rated as 50w, 220v. Calculate the energy consumed by the buld in 20 minutes. Express your answer in commercial units of electric energy.
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A deck of cards contains 52 cards. They are divided into four suits: spades, diamonds, clubs and hearts. Each suit has 13 cards: ace through 10, and three picturecards: Jack, Queen, and King.
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Answer:
60kWh
Explanation:
Given,
t=20mins=20 x 60 = 1200s.
P=2.5W
E=P x t
=2.5 x 1200
=60000W
In commercial unit,
(60000 / 1000)kWh
=60kWh
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