How would you test a circuit for continuity using a digital multimeter, and what reading indicates continuity?

• A. Set to voltage; measure across; any reading indicates continuity.
• B. Set to continuity or resistance, place probes on the two points; a low resistance (near 0 Ω) or audible beep indicates continuity.
• C. Set to current; measure; high current indicates continuity.
• D. Use insulation test; any reading indicates continuity.

Answer: (B)

Testing for continuity with a digital multimeter is about finding a complete path between two points. Switch the meter to the continuity or resistance function, then place the probes on the two points you want to test. If there is a conductor connecting them, current can flow easily, so the reading will be a very low resistance (near 0 ohms), and most meters will also beep to indicate continuity. If the path is not complete, the reading will be high or show open-circuit (OL) and there will be no audible beep. This method checks for a continuous path, not for voltage or current, and is the standard way to verify wiring, connections, fuses, and short or open circuits. Always ensure the circuit is de-energized before testing. Insulation testing or measuring with voltage or current settings is not appropriate for continuity checks.