A capacitor is charged by using a battery which is then disconnected. A dielectric slab is then slipped between the plates, which results in

Options

A. reduction of charge on the plates and increase of potential across the plates.
B. increase in potential difference across the plates, reduction in stored energy, but no change in charge on the plates
C. decrease in potential difference across the plates, reduction in stored energy, but no change in charge on the plates
D. none of these

Answer

C