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

A 12 PF (PiCofarad) capacitor is Connected to 50V (volt) battery. How much electrostatic energy is stored in the capacitor?

When a capacitor is connected to a battery

A 400 pf capacitor is charged by a 100 V battery. How much electrostaic energy is stored by the capacitor ? The capacitor is disconnected from the battery and connected to antoher 400 pF capacitor. What is the electrostatic energy stored by the system?

700 pF capacitor is charged by a 50 V battery, How much electrostatic energy is stored by it?

A 900 pF (PiCo farad) capacitor is charged by 100 V (Volt) battery How much electrostatic energy is stored by the capacitor ?

A 900 pF (PiCo farad) capacitor is charged by 100 V (Volt) battery How much electrostatic energy is stored by the capacitor ?

The plates of a parallel plate capacitor have an area of 90 cm^2 each and are separated by 2.5 mm. The capacitor is charged by connecting it to a 400 V supply. How much electrostatic energy is stored by the capacitor?