How does a wiring diagram represent the connections of a circuit?

The choice indicating that a wiring diagram represents the connections of a circuit externally to show locations is correct because wiring diagrams are designed to provide a clear and straightforward visual representation of how different components in a circuit are connected in relation to their physical locations. This aspect makes it easier for technicians and engineers to understand where each component is situated in the system, enabling them to troubleshoot, maintain, or construct the circuit effectively.

Wiring diagrams often depict components as simplified symbols and include lines that represent wires, illustrating the physical layout and connections without getting bogged down in the complex details of each component's internal workings or the operational flow of the current. This focus on the physical arrangement and the connections between components is critical for practical applications, especially in installation and repair scenarios, where knowing the exact location of each component is essential for proper service or modification.