Resistor

A resistor is an electrical component designed to introduce a specific amount of resistance into an electric circuit. It is typically made from materials such as carbon, metal, or metal oxide, and is used to limit the flow of electric current. Resistors are characterized by their resistance value, which is measured in ohms (Ω).

They come in various types including fixed resistors, which have a predetermined resistance value that cannot be changed, and variable resistors (also known as potentiometers), which can be adjusted to vary the resistance within a certain range. Resistors play a crucial role in electronic circuits by controlling voltage levels, limiting current, dividing voltages, and performing signal conditioning tasks.