a measure of the flow of electric charge across a surface. The SI unit of electric current is the ampere, which is equal to a flow rate of one coulomb per second.
a means to measuring the pieces of energy.
Current, and not voltage, is what that can kill in electrical accident.
It's important to learn about the basic SI units related to electrical power and energy. The current flowing through a conductor (e.g. a wire) is directly proportional to voltage, as expressed in Ohm's law: I=V/R (I=intensity or current, V=voltage, R=Resistance )