Three identical capacitors C, C and C3 have a capacitance of 1.0 F each and they are uncharged initially. They are connected in a circuit as shown in the figure and C, is then filled completely with a dielectric material of relative permittivity. The cell electromotive force (emf) Vo = 8V. First the switch S, is closed while the switch S is kept open. When the capacitor C3 is fully S charged, S, is opened and S is closed simultaneously. When all the capacitors reach equilibrium, the charge on C3 is found to be 5C. The value of e,=_ TC CC -C3