A parallel plate air capacitor has a capacitance of `3 xx 10^-9F`. A slab of dielectric constant 3 and thickness 3cm completely fills the space between the plates. The potential difference between the plates is maintained constant at 400 volt. What is the change in the energy of capacitor if the slab is removed?

A parallel plate air capacitor has a capacitance of 4muF . A slab of dielectric constant 4 and thickness 4 cm completely fills the space between the plates. The potential difference between the plates is maintained constant at 200 volt. What is the change in the energy of a capacitor if the slab is removed?

A parallel plate air condenser has a capacity of 21 mu F . What will be the new capacity if A marble slab of dielectric constant 8 is introduced between the two plates?

Two plates of a parallel plate capacitor are 4 mm apart. A slab of dielectric constant 3 and thickness 3mm is introduced between the plates with the faces parallel to them. The distance between the faces is so adjusted that the capacitance of the capacitor becomes 2/3 of its original value. What is the new distance between the plates ?

A charged parallel plate capacitor has a potential energy U. if a slab of dielectric constant k is inserted between the plates, then the new potential energy will be_

Capacity of a capacitor is 3muF . A slab of dielectric constant 4 is inserted between the plates and capacitor is charged to 200V and then isolated. What is the new potential difference if the dielectric slab is removed?

A parallel plate capacitor with air between the plates has a capacitance of 8 pF.What will be the capacitance if the distance between the plates is reduced by half, and the space between them is filled with a substance of dielectric constants 6 ?

A parallel plate capacitor has an area of 4cm^2 and a plate separation of 3mm:- What is its capacitance if the space between the plates is filled completely with a dielectric having dielectric constant of 6.7.

In a parallel plate capacitor with air between the plates, each plate has an area of 6 xx 10^-3 m^2 and the distance between the plates is 3mm.Calculate the capacitance of the capacitor.If this, capacitor is connected to a 100 V supply,what is the charge on each plate of the capacitor ?