Question

The electric bulb has a thin filament through which the current flows making it warm and glows to

produce light. But if the filament is snapped, the circuit cannot be completed and therefore the

bulb will not glow. You should never play with the lighted bulb as it can be very hot and may burn

your skin.

5. (i) What is the filament of a bulb made up of?

(a) copper

(b) tin

(c) iron

(d) None of these

5. (ii) Electric bulb works on which effect of electric current?

(a) heating

(b) electrical

(c) magnetic

(d) chemical​

Answer 1

Answer:

5(i) option-d

reason: filament is made up of tungsten

5(ii) option - a