Resistors are essential electronic components used to regulate the flow of electric current, divide voltage levels, and protect circuits from excessive current. They are widely applied in electronic devices to control signal levels, bias active components, and ensure stable and safe operation of circuits. Available in various types such as carbon film, metal film, wire-wound, and surface-mount resistors, they come in different resistance values, power ratings, and tolerance ranges to suit diverse applications. Resistors play a critical role in consumer electronics, industrial equipment, automotive systems, and communication devices, contributing to accuracy, reliability, and overall circuit performance.