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If a 100w bulb is used for 20 seconds how much energy does it use?​
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If a 100w bulb is used for 20 seconds how much energy does it use?​

User Immanuel Kirubaharan
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1 Answer

7 votes
Just multiply the watts by the hours . So 100 x 20 = 2000 Wh, or 2 kWh.
User Gaborsch
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