Indroduction

An electric field E_(0) = 3xx10^(4) Vm^(-1) is established between the plates 0.05m apart, of a parallel plate capacitor. After removing the charging battery, an uncharged metal plate of thickness t = 0.1 m is inserted between capacitor plates. Find the p.d. across the capacitor, (i) before (ii) after the indroduction of plates (iii) what would be the p.d if a dielectric slab (K = 2) were inroduced of place of metal plate.