Which statement best describes the function of pilot lights in control circuits?

Which statement best describes the function of pilot lights in control circuits?

• A. They provide power
• B. Pilot lights indicate the status of a device or circuit
• C. They regulate current
• D. They magnetically actuate coils

Answer: (B)

Pilot lights are visual indicators used in control circuits to show the status of a device or circuit. When the control element (like a relay coil or switch) is energized, the pilot light is powered and visibly glows, signaling that the circuit is active or that a device is on. They do not supply power to the main load, they do not regulate current in the circuit, and they do not actuate coils magnetically—their job is simply to provide a quick, visual status indicator. They’re usually wired in parallel with the controlled element so the indicator lights without altering the operation of the main circuit.

Pilot lights are visual indicators used in control circuits to show the status of a device or circuit. When the control element (like a relay coil or switch) is energized, the pilot light is powered and visibly glows, signaling that the circuit is active or that a device is on. They do not supply power to the main load, they do not regulate current in the circuit, and they do not actuate coils magnetically—their job is simply to provide a quick, visual status indicator. They’re usually wired in parallel with the controlled element so the indicator lights without altering the operation of the main circuit.