Difference between revisions of "Kilowatt-hour"
| Line 5: | Line 5: | ||
===About kilowatt-hours=== | ===About kilowatt-hours=== | ||
: The '''kilowatt-hour''' is used by electricity suppliers instead of [[Joule]]s. | : The '''kilowatt-hour''' is used by electricity suppliers instead of [[Joule]]s. | ||
| + | : A '''kilowatt-hour''' is calculated by multiplying the power rating of an appliance in [[kilowatt]]s by the time the appliance is used for in [[hour]]s. | ||
| + | : [[Energy]] ([[kilowatt-hour]]s) = [[Power]] ([[kilowatt]]s) x [[time]] ([[hour]]s) | ||
: A '''kilowatt-hour''' is 3,600,000 [[Joule]]s. | : A '''kilowatt-hour''' is 3,600,000 [[Joule]]s. | ||
Revision as of 18:40, 7 October 2018
Key Stage 3
Meaning
A kilowatt-hour is a unit of energy used for electrical appliances and in electrical bills.
About kilowatt-hours
- The kilowatt-hour is used by electricity suppliers instead of Joules.
- A kilowatt-hour is calculated by multiplying the power rating of an appliance in kilowatts by the time the appliance is used for in hours.
- Energy (kilowatt-hours) = Power (kilowatts) x time (hours)
- A kilowatt-hour is 3,600,000 Joules.