The total charge on the system of capacitance $\mathrm{C}_1=1 \mu \mathrm{~F}, \mathrm{C}_2=2 \mu \mathrm{~F}, \mathrm{C}_3=4 \mu \mathrm{~F}$ and $\mathrm{C}_4=3 \mu \mathrm{~F}$ connected in parallel is
(Assume a battery of 20V is connected to the combination)
