Question

the signal voltage in the door ajar switch circuit shown here should be ______. a) 12v b) 0v c) 6v d) 5v courtesy lamp strategy if door is open, turn lamp on. when door closes, start timer. if timer reaches 12, or if key is on, turn lamp off.

Explanation:

The door ajar switch is shown in the open door position, which grounds the circuit. When the switch is closed (door open), it connects the signal line to ground, resulting in 0V. The courtesy lamp strategy confirms the lamp turns on when the door is open, which aligns with this grounded (0V) signal state.

Answer:

B) 0v