Continuity testing is a method used to check if an electrical circuit is complete and functioning properly. This test helps identify any breaks or faults in the wiring, ensuring that electricity can flow without interruption. 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 pass through. This process is essential for troubleshooting electrical systems in various applications.