Figure shows a capacitor having three layers of equal thickoess and same area as that of its plates. Layer-I is free space, Layer-II is a conductor and Layer-Ill is a dielectric of dielectric constant `k`. Calculate the ratio of energy stored in region III to total energy stored in capacitor when a potential difference is applied across the plates of capacitor.

Figure shows a capacitor having three layers between its plates. Layer x is vacuum, y is conductor, and z is a dielectric. Which of the following change (s) will result in increase in capacitance?

The figure shows a capacitor having three dielectric layers parallel to its plates. Layer x is vacuum, y is conductor and z is a dielectric. Which of the following change(s) will result in increase in capacitance ?

A capacitor between whose plates there is a dielectric with a dielectric constant e is connected to a DC source. How will the energy stored in the capacitor change if the dielectric is removed? Explain the cause of this change.

Figure shows two identical parallel plate capacitors connected to a switch S. Initially ,the switch is closed so that the capacitors are completely charged .The switch is now opened and the free space between the plates of the capacitors is filled with a dielectric of dielectric constant 3. Find the ratio of the initial total energy stored in the capacitors to the final total energy stored.

Figure shows two indentical pallel plate capacitors connected to a switch S. Initially ,the switch is closed so that the capacitors are completely charged .The switch is now opened and the free space between the plates of the capacitors is filled with a dielectric of dielectric constant 3. Find the ratio of the initial total energy stored in the capacitors to the final total energy stored.

Figure shows two indentical pallel plate capacitors connected to a switch S. Initially ,the switch is closed so that the capacitors are completely charged .The switch is now opened and the free space between the plates of the capacitors is filled with a dielectric of dielectric constant 3. Find the ratio of the initial total energy stored in the capacitors to the final total energy stored.