Question

The bulb does not glow in the setup shown in Fig.11.10. List the possible reasons. Explain your answer.

Answer 1

There may be the following possible reasons for not to glow:

• Liquid solution in container is distilled water.
• Bulb may be fused.
• The battery has already been exhausted, there are no sufficient charges (electric current) required for the bulb to glow.
• Any loose connection (air gaps) like electrodes are not properly connected to wire.

Answer 2

There could be several reasons why the bulb does not glow:
The bulb might be faulty or not in working condition; the filament could be broken, or there might be loose connections in the circuit.
The battery used in the circuit might be depleted and lack sufficient energy to light the bulb.
The liquid in the beaker might be non-conductive, preventing electric current from passing through the liquid and completing the circuit.
The liquid might be conductive, but its conductivity could be too low, resulting in a current too weak to produce enough heat in the bulb’s filament to make it glow.
Note: A circuit provides a path for the flow of electricity. If the path is broken, electrons cannot flow through the circuit. If the circuit is complete, electrons can flow from one end of a power source to the other. Sometimes, appliances are connected only to the positive terminal of a power source, with the other end connected to the ground, known as an earth connection. The earth acts as a source of excess electrons and helps complete the circuit.