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.

 

Electric Resistance (Ohm) formulas

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

Where:

\(\large{ R }\) = resistance

\(\large{ V }\) = volt

\(\large{ I }\) = current

\(\large{ P }\) = power

 

Tags: Equations for Electrical