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  • Please use the formula: energy = power x time
  • First you must convert the time to seconds. The answer will be in joules.
  • The answer is: (400 watt) x (5 x 60 seconds) = 12 0000 watt.sec = 12000 Joule = (0.4 kw) x (5/60 hour) = 0.033 Kw.h.
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