What is the definition of a "circuit"?

A circuit is defined as a closed loop that provides a path for current to flow. This definition is fundamental to understanding how electrical systems operate. In a closed circuit, the flow of electric charge is uninterrupted, allowing electricity to travel from a power source, through various components, and back to the source. This continuous loop is essential for the operation of electrical devices and systems.

The closed loop must include a power source, conductors (such as wires), and a load (such as a light bulb or motor) that utilizes the electrical energy. When the circuit is complete, current flows smoothly, activating the load. Understanding the characteristics of a closed loop is crucial for troubleshooting and designing electrical systems.

In contrast to this definition, an open pathway for energy transmission lacks the closure needed for current to flow, which illustrates why this option does not define a circuit. Similarly, while a connection that allows for voltage is a component of a circuit, it does not encompass the requirement for a continuous path for current. Lastly, while multiple conductors can be part of a circuit, the essence of a circuit lies in the closed loop for current flow, making it distinct from merely a series of conductors working together.