When dielectric is inserted in the space between plates of a capacitor, then

When a dielectric is inserted in the space between parallel plates of a charged capacitor, then

When a sheet of dielectric is inserted between the two plates of a capacitor, its capacitance

The capacity of a parallel plate capacitor with air is 18 pF. When a dielectric material is inserted in the space between the plates, its capacity becomes 108 pF. Calculate the permittivity of the material. What is the material?

A capacitor and a bulb are connected in series with a source of alternating emf. If a dielectric slab is inserted between the plates of the capacitor, then

A parallel plate air capcitor is charged and then isolated. When a dielectric material is inserted between the plates of the capacitor , then which odf the following does not change?