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3 cards from this section. Quick, good the night before a test.
What is the commercial unit of energy most commonly used?
Think about how electricity is measured in your home.
Convert 2 kWh to joules.
Remember that 1 kWh = 3.6 × 10⁶ J.
What is the main unit of energy used for household electricity consumption?
Consider how you pay your electricity bill.
1 kilowatt-hour is equal to how many joules?
Recall the multiplication factor between kWh and J.
A home used 500 kWh last month. If 25% of the energy was used by an air conditioner running for 10 hours a day, how much energy did the air conditioner consume?
Look for the percentage of total kWh used.
If a computer uses 150 watts and runs for 8 hours a day over a 30-day month, how much will it cost at $0.08 per kWh?
First convert watts to kilowatts for the total usage.
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