Question

Will the bulb glow in the circuit shown in Fig.? Explain. What can be done to light the bulb?

[5 MARKS]

Answer 1

Statement: 1 Mark
Explanation: 3 Marks
Lighting the bulb: 1 Mark

No, the bulb will not glow in this circuit because the switch is open and the circuit is incomplete.
Whenever the circuit is incomplete, no current flows through it.
So to light the bulb we can complete the circuit by putting any conductor connecting the two terminals.
So when the pin is moved in such a way that it touches both the terminals, the circuit is completed.
When the circuit is completed, the bulb starts glowing.