What is the function of an ohmeter?

An ohmeter is a specialized instrument used to measure electrical resistance in ohms. This is fundamental in various applications, particularly in testing components in electrical circuits. By measuring resistance, the ohmeter helps determine whether a component functions correctly, detects short circuits, or identifies open circuits within a device.

The functionality of an ohmeter relies on its ability to send a small test current through the component being measured and then calculating the resistance based on Ohm’s Law, which states that resistance equals voltage divided by current.

Understanding the resistance can inform technicians about the integrity of electrical circuits, allowing for effective troubleshooting and maintenance.