Derive the expression for the energy stored in a parallel plate capacitor with air between the plates. How does the stored energy change if air is replaced by a medium of dielectric constant K?

Derive the expression for energy stored in a charged capacitor.

Give different expressions to find the energy stores in a capacitor.

Give the expression for the instantaneous energy stored in a capacitor along with the meaning of the symbols used.

Define farad. Give the expression for energy stored in a capacitor of capacitance C charged to a potential V.

Obtain the expression for the energy stored in a charged parallel plate capacitro and express it in its three equivalent forms, in terms of capacitance C, charge Q on the plate and potential difference V between the plates. Use this result to show that the energy density, of the electric field E, in a capacitor equals 1/2varepsilon_0E^2 .