In a continuity test of avionics wiring, what result indicates a healthy, connected path?

In a continuity test of avionics wiring, what result indicates a healthy, connected path?

• A. The meter shows a continuous beep and resistance near zero.
• B. The meter shows no beep but very low resistance.
• C. The meter shows mid-range resistance.
• D. The meter shows infinite resistance.

Answer: (A)

Continuity testing checks whether a path between two points is complete and carries current with minimal resistance. A healthy avionics wire shows a very low resistance because the conductor offers almost no opposition to electrical flow. When the tester detects that low resistance, it typically emits an audible beep, signaling continuity. So seeing the beep together with resistance near zero confirms a proper, connected path. If there were no beep but a very small resistance, that would be unusual for a continuity test and suggests the tester isn’t in continuity mode or there’s a measurement anomaly. A mid-range resistance means some resistance exists along the path, pointing to a degraded conductor, poor connections, or long wires. Infinite resistance indicates an open circuit where the path is broken.

Continuity testing checks whether a path between two points is complete and carries current with minimal resistance. A healthy avionics wire shows a very low resistance because the conductor offers almost no opposition to electrical flow. When the tester detects that low resistance, it typically emits an audible beep, signaling continuity. So seeing the beep together with resistance near zero confirms a proper, connected path. If there were no beep but a very small resistance, that would be unusual for a continuity test and suggests the tester isn’t in continuity mode or there’s a measurement anomaly. A mid-range resistance means some resistance exists along the path, pointing to a degraded conductor, poor connections, or long wires. Infinite resistance indicates an open circuit where the path is broken.