Continuity testing is a method used to check if an electrical circuit is complete and functioning properly. This test ensures that there are no breaks or interruptions in the circuit, which could prevent electricity from flowing. It is commonly performed using a device called a multimeter, which measures the electrical resistance in the circuit. During continuity testing, the multimeter is set to the continuity mode, and probes are placed at different points in the circuit. If the circuit is complete, the device will emit a sound or show a reading, indicating that electricity can flow freely. This testing is essential for troubleshooting electrical systems and ensuring safety.