The switch

When we press the switch’s button, it opens or closes the electric circuit.

To return to the primitive position, we have to press the switch’s button again.

Check with a multimeter that between points 1 and 2 there is an open circuit when at rest, and that when the switch is pressed, a permanent short circuit appears between 1 and 2.

Press again, and see that an open circuit reappears when the position is at rest.

TURNING ON A LIGHTBULB

While the switch is active, the voltage V of the battery reaches the lightbulb and turns it on, even when we stop pressing the switch. When we press the switch again, the lightbulb turns off.

Application with minikits: We use 1 4,5 V battery holder, 2 minikits, and 1 connection cable.

Mark on the scheme each cable that we place.