Explain what earthing, charging by contact , charging by induction and principles of capacitors are
Earthing : Earthing is the process of connecting an electrical system or component to the ground. This helps to protect the system from electrical shocks, short circuits, lightning strikes and other electrical hazards.
Charging By Contact : Charging by contact is a process of transferring electrical energy from one object to another by direct physical contact. This can be done by rubbing two objects together or by plugging one object into another.
Charging By Induction : Charging by induction is a process of transferring electrical energy from one object to another without direct physical contact. This is done by creating an electrostatic field between the two objects and then using this field to transfer the charge.
Principles of Capacitors: Capacitors are devices that store electrical energy by using two metal plates separated by an insulator. The two plates can accumulate charge, and when connected to a circuit, they can act as a buffer to store electrical energy. The principles of capacitors are based on the relationship between electric potential and charge.