A parallel plate capacitor has rectangular plates with dimensions $6.0 \mathrm{cm}\times 8.0 \mathrm{cm}$. If the plates are separated by a sheet of Teflon $\left(K=2.1\right)$ $1.5 \mathrm{mm}$ thick, how much energy is stored in the capacitor when it is connected to a $12 \mathrm{V}$ battery?

Find the equivalent capacitance of the combination of capacitors between the points $A$ and $B$ as shown in the figure. Also, calculate the total charge that flows in the circuit when a $100 \mathrm{V}$ battery is connected between the points $A$ and $B$.

Three capacitors each of capacitance $9 \mathrm{pF}$ are connected in series. What is the total capacitance of the combination?

Two identical capacitors each of capacity $C$ are charged up to the same potential $V$. Now their oppositely charged plates are connected together, then calculate the energy loss in the form of heat.

For the circuit shown in the figure, find

Final energy stored in the capacitor after the switch is closed.

To increase the charge on the plate of a capacitor implies to :-