Our store's namesake! Resistors are electronic components which have a specific, never-changing†electrical resistance. The resistor's resistance†limits the flow of electrons†through a circuit. They are†passive†components, meaning they only consume power (and can't generate it). Resistors are usually added to circuits where they complement†active†components like op-amps, microcontrollers, and other†integrated circuits. Commonly resistors are used to limit current,†divide voltages, and†pull-up I/O lines.
Box: Resistor 2