Inline Questions

Basic Components and Sources

1. What is an electric cell?
2. Explain the function of the positive and negative terminals of an electric cell.
3. What is a battery and how is it different from a single electric cell?
4. Name two common sources of electricity used in daily life.
5. What is an electric bulb and how does it produce light?
6. Describe the structure of a simple electric bulb.
7. What is the role of a switch in an electric circuit?
8. Explain the difference between an open switch and a closed switch.
9. Why are connecting wires usually covered with plastic or rubber?
10. Name three materials that are commonly used as connecting wires.

Electric Circuits

11. What is an electric circuit?
12. Draw and label a simple electric circuit with a cell, bulb, switch, and wires.
13. Explain why a bulb glows when the switch is closed in a circuit.
14. What happens to the bulb if the switch is kept open? Explain why.
15. Describe what is meant by a “closed circuit”.
16. Describe what is meant by an “open circuit”.
17. Why does the bulb not glow if one wire is loose or broken?
18. Explain how electricity flows in a simple circuit.
19. What is a circuit diagram? Why do we use it?
20. Name any four common symbols used in circuit diagrams (cell, bulb, switch, wire).

Conductors and Insulators

21. What are conductors? Give two examples.
22. What are insulators? Give two examples.
23. Explain why metals are generally good conductors of electricity.
24. Why is rubber used to cover electric wires and plugs?
25. Why should we not touch electrical appliances with wet hands?
26. Name three materials that are good conductors of electricity.
27. Name three materials that are poor conductors (insulators) of electricity.
28. Explain the difference between conductors and insulators with examples.
29. Why is the human body considered a conductor of electricity?
30. Why do electricians wear rubber gloves while working?

Torch and Everyday Applications

31. Describe the main parts of an electric torch.
32. Explain how a torch works when the switch is turned on.
33. What is the function of the reflector in a torch?
34. Why does a torch stop working when its cells are exhausted?
35. How does a sliding switch in a torch help in turning it on and off?
36. What material is used for the outer case of a torch and why?
37. Explain why the bulb in a torch gets dimmer after long use.

Safety and Precautions

38. List three safety precautions we should take while using electricity.
39. Why should we never use electricity near water?
40. What should you do if someone gets an electric shock?
41. Why is it dangerous to touch switches or plugs with wet hands?
42. Explain why we should not fly kites near overhead electric wires.
43. Why should we not insert wires or pins into electric sockets?
44. Name two ways electricity can be wasted in daily life.

Miscellaneous Descriptive Questions

45. Explain why a bulb glows brighter when two cells are connected in series compared to one cell.
46. What happens if we connect too many bulbs in a single circuit?
47. Why do we use fuses in household electric circuits?
48. Describe how electricity reaches our homes from power stations (in simple terms).
49. Explain the importance of an earth wire in electrical appliances.
50. Why is it advised to use electricity carefully and avoid wastage?