Question

briefly explain the principle of capacitor obtain the expression for the capacitance of a parallel plate capacitor having plate separation 'd' and a block of conducting material having thickness 'r' between the plates such that r

Answer 1

If a metal plate of thickness t is introduced between the plates, then the effective distance between the plates will be reduced to d-t. Hence c' = e0A/d-t. Hence the capacitance increases.