A capacitor charged form a 50 V d.c. supply is found to have a charge of `10muC`. What is the capacitance of the capacitor and how much energy is stored in it?

A parallel plate capacitor of capacitance C is charged to a potential V. It is then connected to another uncharged capacitor having the same capacitance. Find out the ratio of the energy stored in the combined system to that stored initially in the single capacitor.

The plates of a parallel plate capacitor are 50m^2 and one mm apart apart when it is connected to a 45 V battery, what is the charge on either plate and the energy stored in it?

A 10 mu F capacitors is charged by a 30 V d.c supply and then connected across an uncharged 50 mu F capacitor. (ii) initial and final energies.

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. (a) How much electrostatic energy is stored by the capacitor? (b) View this energy as stored in the electrostatic field between the plates, and obtain the energy per unit volume u. Hence arrive at a relation between u and the magnitude of electric field E between the plates.

A capacitor, resistor of 5 ohm and an inductor of 50 mH are in series with an a.c. source marked 100V-50hz. It is found that voltage is in phase with the current. Calculate the capacitance of the capacitor and the impedance of the circuit.

A 10 mu F capacitors is charged by a 30 V d.c supply and then connected across an uncharged 50 mu F capacitor. Calculate (i) the final potential diff. across the combinition

Capacitor of capacity 1 muF is charged with a charge 40 muC . The energy stored in the capacitor is:

A 4 muF capacitor is charged by a 200 V supply. It is then disconnected from the supply, and is connected to another uncharged 2 muF capacitor. How much electrostatic energy of the first capacitor is lost in the form of heat and electromagnetic radiation?

A 600pF capacitor is charged by a 200V 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?

What is a capacitor? Derive an expression for the evergy stored in a charged capacitor.