Electricity is a property of matter that results from the presence or movement of electric charge. Electric power is a secondary energy source, which means that we get it from the conversion of other primary sources of energy — like coal, natural gas, oil, nuclear power and other natural sources.
Measuring Electricity
Electricity is measured in units of power, called watts. One watt is a small amount of power. It would require nearly 750 watts to equal one horsepower.
A kilowatt represents 1,000 watts. A kilowatt hour (kWh) is equal to the energy of 1,000 watts working for one hour. The amount of electricity a power plant generates or a customer uses over a period of time is measured in kilowatt hours.
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