Resistors are passive electronic components that impede the flow of electric current. They are used in a wide variety of electronic devices, from simple circuits to complex systems. Resistors can be made from a variety of materials, including carbon, metal, and ceramic. The resistance of a resistor is measured in ohms.
Resistors are used to control the flow of current in a circuit. By increasing or decreasing the resistance, the amount of current that flows through the circuit can be changed. Resistors can also be used to create voltage drops in a circuit. This can be useful for powering electronic devices that require a specific voltage.