EN: Electric current is the rate at which electric charge flows through a conductor. - Unit: ampere (A). - Current in a circuit is associated with energy transfer; devices transform electrical energy into other forms.

中文：电流是电荷通过导体的流动速率。 - 单位：安培（A）。 - 电路中的电流对应能量的传递，用电器把电能转化为其他形式。