Capacitor charging:
\begin{equation} Q = Q_0 (1-e^{-\frac{t}{RC}}) \end{equation}
where Q is capacitor change at time t, and Q_0 initial change, and RC the resistance and capacitance. Where, RC is called the “time constant”.
\begin{equation} I = \frac{V}{R} (e^{-\frac{t}{RC}}) \end{equation}
Note! these are inverse relationships: as a capacitor CHARGE, the current DROPS.