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17 September, 04:08

You have an appliance that requires 1.0 amps and runs off a standard ac (120 v outlet. if you run the device for 2 hours a day for every day in a year, and electricity costs 11.0 cents per kw-hr, what is your annual electric bill for using this appliance? $

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  1. 17 September, 04:22
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    Power = V x I = 120 Watts

    Energy = P x t = (120 x 2 x 365) / 1000 = 87.6 kWh

    Cost = E x rate = 87.6 x 11 = $9.63
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