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13 January, 03:59

How much electrical energy is used by a 75 W laptop that is operating 12 minutes?

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  1. 13 January, 04:18
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    75 watts means 75 joules per second. 12 minutes is (12 x 60) = 720 seconds. 75 j/sec x 720sec = 54,000 joules.
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