4 kilowatt hours
TRANSCRIPT
KILOWATT-HOURS AND ALL THAT: The cost of energy
Energy is sometimes expressed in units of power times time , such as watt-second or kilowatt-
hours(kWh).
Example: The cost of electric energy varies around the country, but 5.0 charge per kilowatt-hour is typical. What is the cost of running a 500W color TV set 6.0 hr/day for 30 days?