Calculate the total capacitance of a number of capacitors connected in parallel.

What is the resultant capacitance, when a number of capacitors are connected in series? Derive the expression for it.

In a parallel plate capacitor with air between the plates, each plate has an area of 6 xx 10^-3 m^2 and the distance between the plates is 3 mm. Calculate the capacitance of the capacitor. If this capacitor is connected to a 100 V supply, what is the charge on each plate of the capacitor?

What is the energy when number of capacitors are placed in parallel?