A capacitor of unknown capacitance is connected across a battery of V volts. The charge stored in it is 360 pC. When potential across the capacitor is reduced by 120 V the charge stored in it becomes 120 pC.
Calculate:
(i) The potential V and the unknown capacitance C.
(ii) What will be the charge stored in the capacitor, if the voltage applied had increased by 120 V?
Answer: