Question

7. Identify the electric circuit in which bulb does NOT light up.

a) Only P and Q b) Only Q and R c) Only R and P d) P, Q and R​

Answer 1

Answer:

A break in the filament of an electric bulb means a break in the path of the current between the terminals of the electric cell. Therefore, a fused bulb does not light up as no current passes through its filament.