An air capacitor of capacitance `2muF` is charged to a potential 200 V. What is the energy stored in it? If a medium of dielectric constant 2 is inserted between its plates and the potentials is raised again to the same value, what is the amount of energy, it would store?

A capacitor of capacitance 50 muF is charged to a potential of 1,000 V. Calculate the energy stored in the capacitor.

The potential enery of a charged parallel plate capacitor is U_(0). If a slab of dielectric constant K is inserted between the plates, then the new potential energy will be

A parallel plate capacitor of plate area A and plate separation d is charged to potential difference V and then the battery is disconnected. A slab of dielectric constant K is then inserted between the plates of the capacitor so as to fill the space between the plates. If Q, E and W denote respectively, the magnitude of charge on each plate, the electric field between the plates (after the slab is inserted), and work done on the system, in question, in the process of inserting the slab,

A parallel capacitor has capacitance 20muF . A potential difference of 220 V is applied across it. Calculate the charge on the plates and energy stored in the capacitor. If a dieletric slab of dielectric constant 5 is introduced between its plates, calculate the new value of potential difference and the energy stored.

If a parallel plate capacitor of capacitance C is kept connected to a supply voltage V and then to just fill the space, dielectric slab is inserted between the plates. What will be the change in the capacitance the charge, the potential difference, the electric field and the energy stored?

A parallel plate capacitor has a capacitance of 2muF . A slab of dielectric constant 5 is inserted between the plates and the capaitor is charged to 100 V and then isolated. What is the new potential difference, if the dielectric slab is removed?

A capacitor of capacitance 6muF is charged to a potential equal to 150 V. Itspotential falls to 90 V, when another capacitor is connected to it. Find the capacitance of the second capacitor and the amount of energy lost due to the connection.

An air capacitor is given a charge of 2muC raising its potential to 200 V. If on inserting a dielectric constant its potential falls to 50V, what is the dielectric constant of the medium?

A capacitor with a capacitane of 50muF is connected to 200V, if the distance between its plates is halved, what will be the potential between the plates and what will be the change in energy 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.