Guess.
Make sure they are all off first and turn them on one by one until you notice one that doesn't do any thing to your surroundings.
nothing will happen %100
When switches or any circuit opening devices are in series with each other, they all have to be in the closed position to energize the load.When switches or any circuit opening devices are in parallel with each other, any one of the switches or circuit opening devices in the closed position will energize the load.
A switches main purposes is to stop the current flow in a closed circuit.
Circuit
The store is closed
it's bulb 3
It completes the circuit so electricity can flow through.
POTS or PSTN
It refers to asystem whereby the loop of control is closed to outside interference.
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figured out cancel closed no need to answer question closed figured out
It is after midnight((: