What is a continuity test and what does a low resistance reading indicate?

• A. A continuity test checks for a continuous path; a low resistance reading indicates a good, low-resistance connection.
• B. A continuity test measures insulation resistance
• C. A continuity test measures circuit impedance
• D. A continuity test tests insulation resistance to earth

Answer: (A)

A continuity test checks for a complete conductive path between two points so current can flow without interruptions. When you test, a low-voltage source or a dedicated continuity tester will typically indicate a near-zero resistance or emit a beep if the path is continuous. A low resistance reading means the connection is good and the path has minimal opposition to current. If the path is broken or has high resistance, you’ll see a high resistance or no continuity, signaling a problem with the wiring or connections. This test isn’t about insulation resistance, impedance, or protecting against earth leakage; those measurements assess different aspects of the system, not whether a conductor is continuous.