question_answer

(a) The handles of the tools like screwdrivers and pliers used by electricians for repair work usually have plastic or rubber covers on them. Can you explain why?

(b) When you switch on the torch which part of the bulb glows?

Answer:

(a)  Plastic and rubber both are insulators. So, they protect the electrician from electric shocks.

(b) The filament of the bulb glows, when we switch on the torch.