Resistors are electronic components used to block the flow of electric current in a circuit. It is made from a variety of materials such as carbon, metal, and ceramic and is available in a variety of sizes and shapes.

Resistors are used in a variety of applications such as power supplies, amplifiers, filters and other circuits and require precise control of electrical current. They are usually rated by resistance values and measured in ohms (Ω), and a variety of resistance values are available to suit different applications.

Resistors are often used in circuits to limit electrical current, divide voltage, or adjust the signal level in a circuit. It can be used in series or parallel with other components to achieve your desired effect.