This capacitor cannot be directly connected to the power supply.
Two conductors close together with a layer of non-conductive insulating medium sandwiched between them form a capacitor. A capacitor stores a charge when a voltage is applied between its two plates. The capacitance of a capacitor is numerically equal to the ratio of the amount of charge on a conducting plate to the voltage between the two plates. The basic unit of capacitor capacity is the Farad. The letter C is generally used to represent the capacitive element of the circuit.