What state will the green light be in fifteen seconds after the control switch is opened, following a 7-minute closure?

To determine the state of the green light fifteen seconds after the control switch is opened, it is important to consider the function of the control switch and the behavior of the green light based on its operation during the closure period.

When the control switch is closed for 7 minutes, the green light is likely to remain ON for that duration, indicating that power is being supplied to it. Once the switch is opened, there is typically a brief period in which the light may remain ON due to residual power, but this will not last long.

After the control switch is opened, the green light will begin to lose its power supply. Given that fifteen seconds is a small duration in comparison to the operational capability of most electrical devices, it is reasonable to conclude that the light will have completely turned OFF during that timeframe.

The light being OFF indicates that it is no longer receiving power to sustain lighting, which aligns correctly with the conditions presented in the question.