Which symbol represents a resistor in electrical schematics?

The symbol that represents a resistor in electrical schematics is indeed a zig-zag line. This visual representation is widely standardized in electrical diagrams to indicate resistance within a circuit. The zig-zag shape effectively conveys the concept of resistance, illustrating the obstruction of current flow within the circuit.

When designing or reading schematics, recognizing this symbol is critical for understanding how components are interconnected and function within the overall electrical system. The use of a zig-zag line distinguishes resistors from other components, such as capacitors, which may be represented by distinct shapes like circles or parallel lines. Familiarizing yourself with these symbols is essential for any electrical installation and maintenance work, ensuring accurate interpretation of circuit designs and helping diagnose issues effectively.