- A Bulb
- A wooden board
- A battery
To make an electrical switch press two drawing i pins on a piece of wood. Strip two wires and connect the pins to the circuit with a battery and a bulb. Unfold a paper clip and hook one end of the paper clip around one drawing pin. Bend the other end slightly upwards and position it above the other drawing pin's head. If you press this end slightly to touch the pin, the bulb will light up.
HOW DOES IT WORK?
The pin acts as a switch. As you would see, the purpose of a switch is to give you the liberty of completing the circuit as and when required. When you press the clip, the circuit is completed so the bulb lights up.