# Electrical Power

Written by Jerry Ratzlaff on . Posted in Electrical

Power ( $$P$$ ) is the rate of doing work and is measured by the amount of foot pounds of work done in a particular unit of time. A horsepower is a measure of power. See Ohm's Law

## Formula

$$Watts = \frac{Volts^2}{Ohms}\;\; = \;\;P = \frac{V^2}{R}$$

$$Watts = Volts^2 \;\cdot\; Ohms\;\; = \;\;P = V^2 \;\cdot\; R$$

$$Watts = Volts \;\cdot\; Amps\;\; = \;\;P = V \;\cdot\; I$$

*See watt for calculator, conversion table and equations.

Tags: Equations for Power