What is included in an electrical circuit for an oil burner?

In an electrical circuit for an oil burner, the inclusion of a conductor from the power source to the burner and back is fundamental because it enables the flow of electricity necessary for the burner’s operation. This conductor serves as the pathway that facilitates the movement of electrical current, making it possible for the burner components—like the ignition system and fuel pump—to function correctly.

The circuit must complete a loop that connects the power source (such as an electrical outlet) to various components of the burner and then returns to the source. This completion is crucial for the burner to start and operate effectively. Without this proper connection, the burner would not receive the required electrical energy, and its operation would fail. Therefore, this choice accurately represents a key element of the circuit needed for the oil burner to function correctly.