电容充电电流公式 和 电容放电公式（和充电公式的区别在于初始条件不同）

电容充电过程中，充电电流越来越小，原因是：

A capacitor stores electrical energy in an electric field. When a capacitor is being charged, the electric current flowing into the capacitor creates an electric field between its plates. This electric field stores the energy. As the voltage across the capacitor increases, the electric field becomes stronger. The current flowing into the capacitor decreases as the voltage across the capacitor increases, because the energy stored in the electric field creates a counteracting electromagnetic force that opposes the flow of charges. This is known as the charging current. Once the capacitor is fully charged, no more current will flow into it, and the current will decrease to zero.

电容器在电场中储存电能。当电容器被充电时，流入电容器的电流在其极板之间产生电场。这个电场储存能量。当电容器两端的电压增加时，电场变得更强。流入电容器的电流随着电容器两端电压的增加而减少，因为电场中储存的能量产生了一个与电荷流动相反的反作用电磁力。这被称为充电电流。一旦电容器充满电，就不会有更多的电流流入其中，电流将降低到零。