Electric Resistance

Written by Jerry Ratzlaff on . Posted in Electrical Engineering

pie chartResistance \((R)\) is the ability to resist or prevent the flow of current. In order to overcome the resistance and get the current to flow a higher voltage will be required. Resistance is measured in Ohms, represented by \(R\) and has a symbols \(\Omega\).            

Ohm is a unit of resistance. A constant current of one ampere produces a force of one volt.

 

resistance formula

\(\large{  R = \frac{V}{I} }\)

\(\large{  R = \frac{V^2}{I} }\)

\(\large{  R = \frac{P}{I^2} }\)

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

 

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Tags: Electrical Equations