What measurement is used to test the conductivity of a circuit?

• A. Resistance
• B. Continuity
• C. Capacitance
• D. Inductance

Answer: (B)

Testing conductivity in a circuit is about whether there is a complete path for current to flow. The measurement used for this is a continuity test. A continuity test checks if a continuous electrical path exists between two points; when the path is intact, you’ll typically see a low resistance reading or hear an audible beep indicating continuity. If there’s a break anywhere, the path isn’t complete and you won’t get a beep or you’ll read open circuit.

Capacitance and inductance relate to how components store energy and respond to changes in voltage or current, not to whether a circuit can conduct DC current along a continuous path. Resistance measures how much the path opposes current, but a simple continuity test is the quickest way to verify that current can flow from one point to another, which is precisely what “conductivity of a circuit” means in practical wiring checks.