Final answer:
The voltage when the throttle is closed is typically around 0.5 to 1 volt for a throttle position sensor in automotive applications. Specifics can vary, and this voltage is separate from other electrical concepts such as average voltage across gaps or voltage decay over time.
Step-by-step explanation:
When the throttle is closed, the voltage across a throttle position sensor would typically be around 0.5 to 1 volt. However, the given information does not directly specify the context of the throttle's voltage. For automotive applications, sensors such as the throttle position sensor indeed output a small voltage signal when the throttle is closed. This voltage increases as the throttle opens. In electronic circuits, closed switches would ideally have zero voltage across them because they have nearly zero resistance, but as switches open, the resistance becomes extremely high, often allowing the voltage across the open switch to equal the voltage of the battery.
The examples provided mention various voltages and concepts, including a scenario where 2000 gaps have a sum of voltages equaling 800 MV, resulting in an average voltage of 400 kV. This information is unrelated to a throttle's voltage. Another example is about power usage with a resistance of 0.350 ohms, which again does not provide information about throttle voltage. Lastly, the mention of successive voltage drops to 0.368 of its preceding value refers to a decay process over time, which is a concept that can be seen with discharging capacitors, not directly about throttle voltage in a vehicle.