A 600 pFcapacitor is charged by a 200 V supply. It is then disconnected from the supply and is connected to another uncharged 600 pF capacitor. How much electrostatic energy is lost in the process?

The plates of a parallel plate capacitor have an area (20 cm^2) each are separated by a distance of 2.5 mm. The capacitor is charged by connecting it to a 400V supply. How much electrostatic energy is stored in the capacitor?

A capacitor is charged by connecting a battery. It stores energy U. Now the battery is disconnected and another identical capacitor is connected across it. Then the energy stored by both capacitor of the combination will be

Three capacitors of capacitance 2pF, 3pF, and 4pF are in parallel a. What is the total capacitance of the combination? b. Determine the charge on each capacitor if the combination is connected to a 100V supply?

0.5 A current flows through an electric heating device connected to 230 V supply . How much is the resistance of the circuit ?