Electric current is the measure of the rate of electric charge that passes a given point in an electric circuit.
Electric current calculation formula: Electric Current = V (Potential difference) / R (Electric resistance)
SI unit of electric current is ampere (amp) which equals to 1 coulomb per second. Ampere is one of the seven base units of SI. Other common units are milliampere and kiloampere. The abbreviation is "A".