Ramona1 Answers
artanro Staff answered 3 years ago
Hy Ramona. Electrical switch, the one you press to turn the lights on and off, is in fact a mechanical component which has two states: you press it one way, it closes a circuit – like an uninterrupted wire – and this way you will turn the lights on and, you press it the other way, it opens a circuit – like an interrupted wire – and this way you will turn the lights off.