Electrify Your HVACR Knowledge in 2026 – Power Up with This Practice Test!

A continuity tester functions similarly to an ohmmeter because both devices are used to measure resistance in a circuit. When checking for continuity, the tester sends a small electrical current through the circuit or component. If the current flows without issue, it signifies that there is a complete path for the current, indicating that there is continuity.

The ohmmeter specifically measures the resistance between two points. A low resistance value typically indicates that the circuit is complete, while a high resistance value signifies an open circuit. The continuity tester often incorporates an audible or visual indicator to alert the user of continuity, further connecting its function to the principles of resistance measurement that the ohmmeter embodies. In essence, they both focus on assessing the ability of current to flow, making them inherently similar in their operational purpose.