A household\'s electric bill s shown below. Use this electric bill to answer the

Question

A household's electric bill s shown below. Use this electric bill to answer the following questions except for D. For D you 'W need to actually go around your home and count up the total wattage of al the light bulbs you are using. NOTE: Your answers for n, & c must be exact to be counted as correct. PAYMENTS (-) $291.69 ,ADJUSTME CHARGESOR- AMOUNT DUE |CHARGES $206.02 BILL $27.54 233.56 PREVIOUS METER READING PRESINT METER RFADING TOTAL RESIDENTIAL SALES TAX USAGE SERVICE (3%) CHARGES A.) State the number of days in the billing cycle for the electric bill shown above. days B.) State the number of kWh used in this cycle. kwh C.) State how much the household was charged for energy used in this cycle. Do not include taxes nor other fees D.) State the total wattage of all the light bulbs in your home. E.) What is the cost per kwh? Do not include taxes nor other fees. S/kwh

Explanation / Answer

A)

33 days

B)

2494 kWh

C)

$200.02

D)

t = number of hours = number of days x 24 = 33 x 24 = 792 h

power = energy /time = 2494/792 = 3.15 Watt

E)

200.02/2494 = 0.0802 $/Kwh

= 8.02 cents/kwh

f)

1 kwh = 3.6 x 106 J

hence

2494 kWh = 2494 (3.6 x 106) = 8.98 x 109 J

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