What does a continuity test determine in an electrical circuit?

A continuity test is primarily designed to check whether a circuit is complete and capable of conducting electricity. This test involves applying a small voltage to one end of a conductor while measuring the response at the other end. If there is continuity, it indicates that the current can flow through the circuit without obstruction, confirming that all connections are intact and functioning as intended.

Identifying a complete circuit is crucial for troubleshooting and ensuring safety in electrical systems. When a circuit is not complete—perhaps due to a broken wire, defective component, or poor connection—the continuity test will indicate this, allowing the technician to address the issue before attempting to use the circuit.

In contrast, testing the voltage level at each component, measuring maximum current capacity, or assessing the age of electrical components does not pertain to the purpose of a continuity test. These actions involve different measuring techniques and are aimed at evaluating other aspects of the electrical system rather than verifying its completeness.