Deduce the expression of energy stored in a capacitor.

Why is an insulator sometimes called a dielectric? What is the main difference between free and bound charge? Generally one of the two plates of a Capacitor System is earthed, why? Derive the expression for the energy stored in a charged capacitor.

Calculate the energy stored in a capacitor.

Deduce the expression tau=PxxE

How does energy stored in a inductor?

What form of energy is stored in the capacitor?

Deduce the expression for torque on a rectangular current loop in a uniform magnetic field.

Find an expression for the energy of a charged capacitor.

A 100pF capacitor is charged by a potential difference of 100V. What is the amount of charge storeD? What is the electrostatic energy stored in the capacitor?