What type of diagram shows the electrical connections and functions of a specific circuit using graphic symbols?

A schematic diagram is specifically designed to show the electrical connections and functions of a particular circuit using standard graphic symbols. It focuses on the relationships between components in a system rather than their physical locations. This type of diagram provides clear information about how electrical components like resistors, capacitors, and switches are connected and function together, which is crucial for understanding circuit behavior and troubleshooting.

In addition, schematic diagrams abstract away the physical representation, allowing for a more straightforward interpretation of how the electrical circuit operates, which is essential when designing or analyzing complex systems.

Other options serve different purposes. A one-line diagram represents a simplified version of an electrical system, showing how components connect without detailing individual features or functions. A wiring diagram depicts the physical layout of a circuit, including the actual connections, which is useful for installation but does not focus on functional representation. A pictorial drawing provides a visual representation of components that may include photographs or realistic drawings, making it less effective for conveying schematic connections.