ElectricityElectric Power and Its Uses |
What is a watt? |
A watt is the unit of power, or the rate of energy transfer. Light bulbs, toasters, hair dryers, televisions, and other electrical appliances are rated by the power they use. In the context of electricity, the watt is the unit for electrical power and is often found on light bulbs and other devices used in electrical circuits. The formula to find the power used is P = I x V(power equals current times voltage).