Resistance: Definition, Symbol,Working Principle, Use of It
When we apply electric potential across any conductor, bulb or heater coil then electric current flows through it but when electric current starts flowing through the conductor the conductor material opposes the flow of electric current. The reason why any conductor opposes flow of electric current is known as resistance. Because of it when current flows through any conductor it produces some heat.Every material has its own nature toward electric potential. On the basis of their behaviour in electrical material they are divided into three parts. Conductors( this type of materials have low resistance. It is used for making wire and coils.) Semiconductor (this type of materials have resistance more than conductor but less than Insulators.) Insulators (this type of materials have high resistance. Such type of materials are not flow of electric current through itself. ) In this article we know more about resistance and resistor Table of conte...