Electricity current意思

"Electricity current" is a term that refers to the flow of electric charge. More specifically, it is the rate of flow of electric charge through a surface or space. The charge can be carried by moving electrons, ions, or even holes in semiconductors. The direction of an electric current is defined as the direction in which positive charge would move.

In electrical and electronic circuits, current is measured in units of amperes (A), which is equal to one coulomb of charge moving past a point in one second. Electric current is a fundamental concept in physics and is one of the three main factors that determine the effect of an electric circuit, along with voltage (electromotive force) and resistance.