The electric field between the plates of a parallel plate capacitor is `E_(0)`. The space between the plates is filled completely with a dielectric. There are `n` molecules in unit volume of the dielectric and each molecules is like a dumb – bell of length L with its ends carrying charge `+ q and -q`. Assume that all molecular dipoles get aligned along the field between the plates. Find the electric field between the plates after insertion of the dielectric.