What is the primary function of an electrical schematic?

The primary function of an electrical schematic is to represent an electrical circuit's components and their connections. Schematics serve as a visual representation that allows electricians and engineers to understand the layout of a circuit, including how various components like resistors, capacitors, and switches are interconnected. This depiction helps in analyzing the functionality of the circuit and troubleshooting issues, as it provides a clear map of the circuit's design.

While demonstrating the flow of electricity is certainly related, this is more of a secondary aspect of what schematics provide. They illustrate the connections and components first and foremost, while the flow of electricity can be inferred from the schematic's layout.

Circuit protection and measuring voltage levels pertain to specific functions within electrical systems, but they are not the primary purpose of a schematic diagram. Schematics do not provide protection themselves nor are they tools for measuring electrical parameters; rather, they serve as the foundational documents for understanding electrical systems.