Question

(a) Why does bulb not glow when the safety pin is not in the other drawing pin?(b) select the insulator and cundoctors from among the following materials:plastic scale, rubber, aluminium foil, thermacol.

Answer 1

a) answer:

Since the bulb does not glow when there is only air in the gap between the drawing pins in your switch, it means that air is also an insulator. Conductors and insulators are equally important for us. Switches, electrical plugs and sockets are made of conductors.