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2 cards from this section. Quick, good the night before a test.
What is the formula for calculating electrical energy?
Think about how power and time relate to energy.
How many kilowatts are in 2000 watts?
Remember, 1 kilowatt equals 1000 watts.
What is the unit of measurement for energy consumption commonly used in homes?
Think of how energy is billed in your electricity usage.
True or False: A kilowatt-hour is equal to running a 1000 W device for 1 hour.
Consider the implications of what kilowatt means.
Calculate the total energy cost for a household using an average of 30 kWh per week at a rate of $0.12 per kWh. What annual cost does this equate to?
First find the weekly cost and then multiply by the number of weeks in a year.
If a TV consumes 120 watts and runs for 6 hours a day, calculate the monthly energy consumption in kWh and estimate the monthly cost at $0.15 per kWh.
Calculate daily use and then convert to monthly, followed by cost calculation.
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