# Watt

### From Fiswiki

The watt (symbol: **W**) is a derived unit of power in the International System of Units (SI). It measures rate of energy conversion. One watt is equivalent to 1 joule (J) of energy per second.

In terms of mechanical energy, one watt is the rate at which work is done when an object is moved at a speed of one meter per second against a force of one newton.

**Kilowatt** The kilowatt is equal to one thousand **watts**. This unit is typically used to express the output power of engines and the power consumption of tools and machines. It is also a common unit used to express the electromagnetic power output of radio transmitters.

One kilowatt of power is approximately equal to 1.34 horsepower. A small electric heater with one heating element can use 1.0 kilowatt. The average annual electrical energy consumption of a household in the United States is about 8,900 kilowatt-hours, equivalent to a steady power consumption of about 1 kW, for an entire year.

## [edit] **Also see**

**Lighting Glossary****Timing Glossary**-
**Data Service Requirements World Cup** **Freestyle Timing Booklet****Lux****Sunlight**

## [edit] **Reference**

- See Wikipedia
[1]**Watt**

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