![]() This is watt-hour.Īnother bigger unit of electrical energy is kilowatt-hours or kWh. Acceleration is the rate at which an object changes its velocity. The units of velocity are metres per second (m/s). Velocity is the rate at which an object travels. The commercial unit of electrical energy is a bigger unit of electrical energy. Explanation: The watt (W) is the SI derived unit for power. To resolve this problem of measuring practically consumed electrical energy, a commercial unit of electrical energy comes into the picture. Joule which equals to one watt – second is a very small unit of energy, and it is very difficult to measure a practically consumed electrical energy by this unit. So one-joule electrical energy equals to the product of one volt, one ampere and one second. 1 horsepower 745.699872 watts The formula for Power is this: Power Work/TimeThe SI unit of power is the watt (W), which is equal to one joule per second. One joule means the work required to be done for transferring one-ampere current in one second from one point to another point of potential difference one volt. The unit for power is the Watt (W), which is equal to a Joule per second, This relation can be found from the formula for power, The power used or dissipated by a resistor can be found using the formula V IR. The watt – seconds is referred as joules. The SI unit system is a system of measurement units consisting of seven base units and a collection of 20 prefixes that are employed while specifying the multiples or the fractions of units. The unit of electric power is watt, and hence unit of electrical energy is watt – second since energy is the product of power and time. According to the SI system or the International System of units, power is measured in Watts, which is equal to one joule per second, where joule is the unit of energy. It is still used commonly in the United States and, more generally, to measure the power of engines. ![]()
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