Electric Current

Current \((I)\) is the rate of flow of electricity in a circuit, measured in amperes.  Amp is a unit of current.  One ampere (amp) is the current flowing through one ohm of resistance at one volt potential.

 

Current (Amp) formulas

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

Where:

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