The Cost of Electricity Watts and kilowatts are measurements of the work being done as electric current passes through a circuit. The higher the wattage of an appliance or device, the more work is being done and the more electricity is consumed. One kilowatt is equal to one-thousand watts. You can convert using this formula: Watts / 1000 = Kilowatts Electricity consumption is measured by the kilowatt-hour. This is the amount of electrical energy converted over one hour of time. You can calculate kilowatt-hours using this formula: Kilowatts x Time in Hours = Kilowatt-hours Electricity costs vary by region, let's use the prices shown in this sample electric bill from Southen Califormia Edison. EDISON Southern Calfornia Edison Company PO. Box 600, Rosemead. CA917710001 Visit us at www Billing Period - 07/02/03 to 08/01/03 ( 30 days ) - Summer Season Basic Charge Energy Charge: Baselíne-Summer 30 Days x 00.03s00 0.99 462 kh x 0.15009 60.10 The baseline-summer line shows a cost of about 13 cents, or $0.13 per kWh (kilowatt-hour). You can figure out the cost of a device by multiplying its electricity consumption in kWh by this cost. Electricity Consumption(kWh) x Price(S) = Total Cost Use these formulas to determine the cost of each of these appliances of devices over a given perjod of. time. 1. One of your classes at school takes place in the computer lab. You work on an assignment for an hour. The school lab has old desktop computers that use 100 watts hour and large CRT (tube) monitors that use 75 watts/hour. 2. Ariving back from school, you decide to microwave a Hot Pocket for a snack. You have a 1500W microwave that took 3 minutes to cook the Hot Pocket. 3. Noticing the sink full of dishes, you place them in the dishwasher and let it run for an hour and a half (including the drying cycle). Your dishwasher uses 2000 watts per hour.

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The Cost of Electricity
Watts and kilowatts are measurements of the work being done as electric current passes through a
circuit. The higher the wattage of an appliance or device, the more work is being done and the more
electricity is consumed.
One kilowatt is equal to one-thousand watts. You can convert using this formula:
Watts / 1000 = Kilowatts
Electricity consumption is measured by the kilowatt-hour. This is the amount of electrical energy
converted over one hour of time.
You can calculate kilowatt-hours using this formula:
Kilowatts x Time in Hours = Kilowatt-hours
Electricity costs vary by region, let's use the prices shown in this sample electric bill from Southem
Califormia Edison.
Southern California Edison Company
P.O. Box 600, Rosemead, CA 91771-0001
Visit us at:
EDISON
www.sce.com
Billing Period - 07/02/03 to 08/01/03 ( 30 days ) - Summer Season
Basic Charge
Energy Charge:
Baselíne-Summer
30 Days x 60.03300
0.99
462 kWh x 60.15009
60.10
The baseline-summer line shows a cost of about 13 cents, or $0.13 per kWh (kilowatt-hour). You can
figure out the cost of a device by multiplying its electricity consumption in kWh by this cost.
Electricity Consumption(kWh) x Price(S) = Total Cost
Use these formulas to determine the cost of each of these appliances of devices over a given period of.
time-
1. One of your classes at school takes place in the computer lab. You work on an assignment for an
hour. The school lab has old desktop computers that use 100 watts/hour and large CRT (tube)
monitors that use 75 watts/hour.
2. Ariving back from school, you decide to microwave a Hot Pocket for a snack. You have a
1500W microwave that took 3 minutes to cook the Hot Pocket.
3. Noticing the sink full of dishes, you place them in the dishwasher and let it run for an hour and a
half (including the drying cycle). Your dishwasher uses 2000 watts per hour.
4. You decide to relax for the night by playing video games on your Playstation 3. You lose track
of time and end up playing for 3 hours. The PS3 uses 197 watts/hour. You have an expensive
plasma TV that uses 339 watts/hour.
Transcribed Image Text:The Cost of Electricity Watts and kilowatts are measurements of the work being done as electric current passes through a circuit. The higher the wattage of an appliance or device, the more work is being done and the more electricity is consumed. One kilowatt is equal to one-thousand watts. You can convert using this formula: Watts / 1000 = Kilowatts Electricity consumption is measured by the kilowatt-hour. This is the amount of electrical energy converted over one hour of time. You can calculate kilowatt-hours using this formula: Kilowatts x Time in Hours = Kilowatt-hours Electricity costs vary by region, let's use the prices shown in this sample electric bill from Southem Califormia Edison. Southern California Edison Company P.O. Box 600, Rosemead, CA 91771-0001 Visit us at: EDISON www.sce.com Billing Period - 07/02/03 to 08/01/03 ( 30 days ) - Summer Season Basic Charge Energy Charge: Baselíne-Summer 30 Days x 60.03300 0.99 462 kWh x 60.15009 60.10 The baseline-summer line shows a cost of about 13 cents, or $0.13 per kWh (kilowatt-hour). You can figure out the cost of a device by multiplying its electricity consumption in kWh by this cost. Electricity Consumption(kWh) x Price(S) = Total Cost Use these formulas to determine the cost of each of these appliances of devices over a given period of. time- 1. One of your classes at school takes place in the computer lab. You work on an assignment for an hour. The school lab has old desktop computers that use 100 watts/hour and large CRT (tube) monitors that use 75 watts/hour. 2. Ariving back from school, you decide to microwave a Hot Pocket for a snack. You have a 1500W microwave that took 3 minutes to cook the Hot Pocket. 3. Noticing the sink full of dishes, you place them in the dishwasher and let it run for an hour and a half (including the drying cycle). Your dishwasher uses 2000 watts per hour. 4. You decide to relax for the night by playing video games on your Playstation 3. You lose track of time and end up playing for 3 hours. The PS3 uses 197 watts/hour. You have an expensive plasma TV that uses 339 watts/hour.
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