What is a Capacitor and how does it work

Capacitor and its work

 

t is a device for string electric charge. It is a system of two (or more) plates on P; which we can store electric charge.

 

Parallel Plate Capacitor:

 

It is a simple capacitor with two parallel plates on which we store the electric charge.

 

 

Construction:

 

A parallel plate capacitor has two metallic plates with their stands and a dielectric which is air or some insulator. E.g. wax paper, wax, oil and mica.

 

Working:

 

When the plates of a capacitor are connected to a voltage source. The electrons flow from a plate A to the positive charged terminal and B plate to negative terminal. Thus plate A acquires -q charge. Due to attraction voltage on plates increases gradually. Then charging stops when the potential difference (voltage) becomes the voltage of source.

 

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