Capacitor (also known as condenser) is a two metal plates device separated by an insulating medium such as foil, laminated paper, air etc. ... Keep in mind that capacitor acts as an open circuit in DC i.e. it only operable at AC voltages.

Does capacitor work on AC or DC?

Hint:Capacitors are used in various electronic devices in modern times and these electronic devices used to work on the AC current of sometimes of the DC current. Capacitor stores charge during the time of DC circuit and changes polarity at the time of the AC circuit.

Can capacitor be used in DC?

Capacitors can be used in many different applications and circuits such as blocking DC current while passing audio signals, pulses, or alternating current, or other time varying wave forms. ... At DC a capacitor has infinite impedance (open -circuit), at very high frequencies a capacitor has zero impedance (short-circuit).