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Unit of energy or work done is Joule (J) and time is Second So unit of Power will be joule Sec It is given as : SI unit of power is Watt denoted by W. Was this answer helpful? The watt is the unit of electrical power, it measures the energy per unit of a second. One watt equals one July per second. The SI unit of power is Watt (W) which is joules per second (J/s). Sometimes the power of motor vehicles and other machines is expressed in terms of Horsepower (hp), which is approximately equal to 745.7 watts. Power can also be related to other things or situations, for example, the power that helps various things move around. The unit of power in the SI system is the watt (symbol: W), equivalent to 1 joule per second. Explore further in our comprehensive guide!
