Which symbol represents a resistor in circuit diagrams?

Which symbol represents a resistor in circuit diagrams?

• A. Open Switch Symbol
• B. Transformer Symbol
• C. Resistor Symbol
• D. Thermistor Symbol

Answer: (C)

In circuit diagrams, symbols are standardized so you can instantly recognize each component. The resistor is identified by its distinct resistor symbol, which is typically a zigzag line in US conventions or a simple rectangle in IEC standards. This shape is unique to resistors, so it clearly marks a component that provides resistance in the circuit. The other symbols correspond to different parts: an open switch shows a gap with a movable contact, indicating switching capability; a transformer symbol displays two inductors close together with a core, indicating magnetic coupling; a thermistor uses the basic resistor symbol but with extra meaning for temperature dependence, so it still isn’t the plain resistor symbol itself. Therefore, the symbol that represents a resistor is the resistor symbol.

In circuit diagrams, symbols are standardized so you can instantly recognize each component. The resistor is identified by its distinct resistor symbol, which is typically a zigzag line in US conventions or a simple rectangle in IEC standards. This shape is unique to resistors, so it clearly marks a component that provides resistance in the circuit.

The other symbols correspond to different parts: an open switch shows a gap with a movable contact, indicating switching capability; a transformer symbol displays two inductors close together with a core, indicating magnetic coupling; a thermistor uses the basic resistor symbol but with extra meaning for temperature dependence, so it still isn’t the plain resistor symbol itself. Therefore, the symbol that represents a resistor is the resistor symbol.