Q.(i). A capacitor C stores charge Q when there is a potential difference V. When a potential difference of V + 12.5Volts is used, an extra 45.50 microC of charge is stored. What is the capacitance C?
(ii). A second capacitor C has a plate separation of 4.5 mm. while the plates are separated an extra 2.0 mm the capacitance decreases by 7.50 microF. What is the capacitance?