Service From: NOV 17 to DEC 20 (33 days) A.) In joules , how much energy did thi

Question

Service From: NOV 17 to DEC 20 (33 days)

A.) In joules, how much energy did this household use?

B.) What was this household's average power consumption? Express your answer in both W and kW.

C.) The electric company has seen to it that each home is provided with roughly 120 V at each electrical outlet (there are a few that are 240 V but we'll ignore those). Using this fact and your previous answer (the power in W) determine the average current that was running through this house.

PREVIOUS BILL AMOUNT PAYMENTS
(-) NEW CHARGES (+) ADJUSTMENTS (+ OR -) AMOUNT DUE (=) $165.51 $165.51 $253.69 -$13.36 $240.33

Explanation / Answer

part A )

1kWh = 3.6 x 10^6 J

2068 kWh = 7.4448 x 10^9 J

part B )

total hour = 33 *24 = 792 hr

W = 1000 * kWh / h

W = 1000 * 2068 / 792

W = 2611.11 W

= 2.611 kW

part c )

P = VI

2611.11 = 120 *I

I = 21.76 A

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