What is the expected reading on an ohmmeter for a good resistor?

A good resistor should provide a specific resistance value that matches its rated resistance. This value is based on the resistor’s specifications, which indicate how it should function in a circuit. When using an ohmmeter, a measurement consistent with the resistor's nominal value indicates that the component is functioning properly and has maintained its intended resistance.

If the reading shows zero ohms, it suggests a short circuit, which is not indicative of a healthy resistor. An infinite reading would imply an open circuit, meaning the resistor has failed completely. A fluctuating resistance value could indicate instability or malfunction, which also does not align with the expected behavior of a reliable resistor. Thus, a specific resistance value demonstrates that the resistor is intact and operating according to its designed function.