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Power (Physics)

In physics, power is the rate at which energy is transferred, used, or transformed. the unit of power is the joule per second (j/s), known as the watt (in honor of james watt, the eighteenth-century developer of the steam engine). for example, the rate at which a light bulb transforms electrical energy into heat and light is measured in watts—the more wattage, the more power, or equivalently the more electrical energy is used per unit time.