Physics
If an appliance of power P watt is used for time t hour, how much electrical energy is consumed in kWh?
Household Circuits
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Answer
Power = P watt or P x 10-3 kW
time = t hour
Power =
Energy = Power x time
= P x 10-3 kW x t h
= P x t x 10-3 kWh
Electrical energy consumed = Pt x 10-3 kWh.
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