Describe what work needs to be done to charge a capacitor. Mathematically derive work done, W = (1 / 2) * (Q^2 / C) = (1 / 2) * (CV^2) = (1 / 2) * (QV). Check energy stored in a capacitor using Joulemeter.
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A capacitor of capacitance C has charge Q and stored energy W. If the charge is increased to 2Q, the stored energy would be:
In a charged capacitor the energy is stored in:
In the following circuit two identical capacitors, a battery, and a switch are connected as shown. the switch is opened and dielectric of constant 3 are inserted in the condensers. The ratio of electrostatic energies of the system before and after filling the dielectric will be