Which statement about a continuity test across the two-wire circuit is correct?

• A. It confirms the circuit is intact without external power.
• B. It measures the inductance of the line.
• C. It detects whether the path is continuous from end to end.
• D. It indicates the presence of a DC power source.

Answer: (C)

Continuity is about making sure there is an unbroken electrical path from one end of the circuit to the other. In a two-wire sound-powered setup, you’re checking that the conductors run all the way end to end without any breaks, so current (and thus the audio signal) can flow when you touch the ends together or connect a test device.

That makes the statement describing the test as detecting whether the path is continuous from end to end the best choice. The test is done with power removed so you’re just verifying connectivity, not measuring inductance or detecting a power source. Those other aspects require different tests or instruments.