A resistor is a component that limits the flow of electric current in a circuit and offers resistance to electric current. Learn about resistor symbol, unit, types, color code, applications, and how to use them in a circuit. A Resistor acts as a main electronic component in regulating or limiting the flow of an electric current in an electrical circuit. It is mainly used in electronic circuits because it acts as a current controller, it controls high and low voltage and it protects the components. Resistor is a passive electronic component having that creates resistance in the flow of electric current. They are primarily used for limiting or regulating the current flow. In electrical and electronic circuits, the resistor is a passive circuit component that is used to introduce electrical resistance in the flow of electric current through the circuit. Therefore, the primary function of a resistor is to control the amount of current through a circuit.
