What are the applications of a capacitor?

Explanation

A capacitor is used
(i) In the digital camera to emit flash of light.
(ii) In heart defibrillator to give a sudden surge of a large amound of electric field energy to the patient.s chest.
(iii) In the ignition system of automobile engine to eliminate sparking.
(iv) In power supplies to reduce power fluctuations so that the efficiency of power transimission can be increased.