Fig, shows two indentical capacitors `C_(1) and C_(2)` each of `1 uF` capacitance connected to a battery of 6V. Initially, swich S is closed. After some time, the swich S is left open and dielectric slabs of K = 3 are inserted to filll completely the space between the plates of two capacitors . How will (i) the charge and (ii) potential difference between the plates of the capacitors be affected after the slabs are inserted ?