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Power is the amount of energy transferred or converted per unit time. In the International System of Units, the unit of power is the watt, equal to one joule per second. Power is a scalar quantity.
Power is the rate at which work is done. It is the work/time ratio. Mathematically, it is computed using the following equation. Power = Work / time or P = W / t . The standard metric unit of power is the Watt. As is implied by the equation for power, a unit of power is equivalent to a unit of work divided by a unit of time.
The Power Formula is used to compute the Power, Resistance, Voltage or current in an electrical circuit. The standard metric unit of power is the Watt. Solved Examples
Power is the rate at which work is done, or in equation form, for the average power \(P\) for work \(W\) done over a time \(t\), \(P = W/t\). The SI unit for power is the watt (W), where \(1 \space W …
In this section, students learn how work determines changes in kinetic energy and that power is the rate at which work is done. Review understanding of mass, velocity, and acceleration due to gravity. Define the general definitions of the words potential kinetic. Remind students of the equation .
Learn how to calculate electric power using the formula P = IV, where P is power in watts, I is current in amps, and V is voltage in volts. See examples of charging a phone, a fan heater, and a flashlight, and how to use Ohm's law to find resistance.
Learn what power is, how to calculate it, and what units are used to measure it. Explore the power of various devices, events, phenomena, and processes with examples and graphs.
