Define the term "circuit."

The term "circuit" is defined as a complete path for current to flow. In electrical terminology, a circuit consists of components such as resistors, capacitors, and power sources that are connected in a loop, allowing electric current to travel from the source, through the connected devices, and back to the source again. This closed loop is essential for the operation of electrical devices, as it enables the flow of electricity to power them.

In practical terms, if any part of the circuit is broken or disconnected, the current cannot flow, and the devices will not function. This concept is foundational to the understanding of both AC (alternating current) and DC (direct current) systems. Understanding circuits is crucial for anyone involved in electrical work, as they must be able to analyze and troubleshoot to ensure the safe and effective operation of electrical systems.