Question

What is capacitor and its application?

Answer 1

1. A capacitor is a two-terminal electrical device that possesses the ability to store energy in the form of an electric charge.
2. It consists of two electrical conductors that are separated by a distance.
3. The space between the conductors may be filled by vacuum or with an insulating material known as a dielectric.
4. The ability of the capacitor to store charges is known as capacitance.
5. It is given by $C=\frac{{\epsilon }_{0}A}{d}whereciscapaci\tan ce,Aisareaofplate,{\epsilon }_{0}ispermitivityoffreespace$
6. Electrical signals are filtered, smoothed, and bypassed using it.
7. It is a device used for storing electrical energy, it is a passive component in a circuit.
8. The effect caused by the capacitor in an electrical circuit is a capacitance
9. Applications of capacitors:
   9.1 Energy storage: Used as a storage device when connected to an electrical circuit
   9.2 Audio amplification: To assist create a smooth sound, capacitors connect the steady DC impulses with the quickly varying voltages that drive speakers.
   9.3 Lasers: The capacitors are built into a laser power unit's capacitor bank, where they are used for buffering the supply voltage.
   9.4 Flash camera: An electrolytic capacitor used in flash cameras, professional flashes, and solid-state laser power sources .