电流

电流是电荷的流动。在电路中，这种电荷通常由导线中移动的电子携带。它也可以由电解质中的离子或者等离子体中的离子和电子共同携带。

An electric current is a flow of electric charge. In electric circuits this charge is often carried by moving electrons in a wire. It can also be carried by ions in an electrolyte, or by both ions and electrons such as in a plasma.