Electric Power

Written by Jerry Ratzlaff on . Posted in Electrical Engineering

pie chartPower \((P)\) 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.

 

Power (Watt) formulas

\(\large{ Watts = \frac{Volts^2}{Ohms} = P = \frac{V^2}{R} }\)   
\(\large{ Watts = Volts^2 \; Ohms = P = V^2 \; R }\)   
\(\large{ Watts = Volts \; Amps = P = V \; I }\)  

Where:

 Units English Metric
\(\large{ P }\) = power \(\large{W}\) \(\large{\frac{kg-m^2}{s^3}}\)
\(\large{ I }\) = current \(\large{I}\) \(\large{\frac{C}{s}}\)
\(\large{ R }\) = resistance \(\large{\Omega}\) \(\large{\frac{kg-m^2}{s^3-A^2}}\)
\(\large{ V }\) = volt \(\large{V}\) \(\large{\frac{kg-m^2}{s^{3}-A}}\)

 

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Tags: Electrical Equations