Electrostatic Energy Density|Capacitance|Capacitor

Capacitance of a capacitor.

A 2muF capacitor is connected to a 10 V battery. What is the electrostatic energy stored in the capacitor?

A 900 pF capacitor is charged by a 100 V battery. The electrostatic energy stored by the capacitor is

A 12 pF capacitor is connected to a 50 V battery. How much electrostatic energy is stored in the capacitor ?

A capacitor of capacitance 700 pF is charged by 100 V battery. The electrostatic energy stored by the capacitor is

The total electrostatic energy stored in both the capacitor is