Which symbol is used to represent a solenoid in schematics?

Which symbol is used to represent a solenoid in schematics?

• A. Coil symbol
• B. Resistor symbol
• C. Switch
• D. Box with diagonal line inside

Answer: (D)

Solenoids are electromechanical actuators, so their schematic symbol shows a device outline with a moving part. The box represents the actuator as a whole, and the diagonal line inside depicts the movable plunger or armature that shifts when the coil is energized. This distinguishes it from a plain coil (an inductor), a resistor, or a switch, which are different components. The diagonal line inside a boxed symbol communicates that energizing the coil will produce mechanical motion, which is the function of a solenoid.

Solenoids are electromechanical actuators, so their schematic symbol shows a device outline with a moving part. The box represents the actuator as a whole, and the diagonal line inside depicts the movable plunger or armature that shifts when the coil is energized. This distinguishes it from a plain coil (an inductor), a resistor, or a switch, which are different components. The diagonal line inside a boxed symbol communicates that energizing the coil will produce mechanical motion, which is the function of a solenoid.