Question

the figure shows an open circuit even after the circuit is closed the bulb does not light up at all​

Answer 1

Answer and Explanation:

The bulb does not glow even after the circuit is closed

The possible reasons why the bulb does not glow are:

1. The object S is an insulator of electricity or it is not a conductor of electricity like wood or plastic
2. The filament of the bulb may be fused due to excess usage
3. The batteries in the circuit may not be charged
4. The connections from the batteries to the bulb may not be proper
5. Their might have been a break in the wires used
6. The potential difference provided by the batteries might not be sufficient enough

These may be the possible reasons why the bulb is not glowing