(Solved): Example: RC circuit, with emf. The capacitance in the circuit shown is C=0.30F, the total resista ...

Example: $RC$ circuit, with emf. The capacitance in the circuit shown is $C=0.30?\mathrm{F}$, the total resistance is 20 $\mathrm{k}?$, and the battery emf is $12\mathrm{V}$. Determine, a) the time constant, b) the maximum charge the capacitor could acquire, c) the time it takes for the charge to reach $99\%$ of this value, d) the current $I$ when the charge $Q$ is half its maximum value, e) the maximum current, and f) the charge $Q$ when the current $I$ is 0.20 its maximum value.