What in a circuit diagram represents a wire?

• A. Capacitor
• B. Inductor
• C. Wire
• D. Diode

Answer: (C)

In circuit diagrams, a line between components represents a wire. This line shows the conducting path that connects parts of the circuit and carries current. Wires are treated as ideal conductors with negligible resistance, so the symbols for actual components (such as capacitors with two parallel plates, inductors as coils, and diodes as triangles with a bar) are what indicate active elements, while the line shows how everything is linked together. Junctions where lines meet define connections, and how lines cross can indicate whether there is a connection or not.