Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 105 · 40 questions

Remember (Metal passes, plastic blocks): Conductors: metals (copper, iron, steel, aluminium, brass) and graphite. Insulators: rubber, plastic, wood, glass, paper, cotton, wool, cork, ceramic and dry air. Tester: put the object across the gap — the bulb glows only for a conductor.

1. 1.True or false: a copper wire is a conductor. (a) True (b) False
2. 2.Which of these is an insulator? (a) a steel spoon (b) a plastic ruler (c) aluminium foil (d) a graphite rod
3. 3.Which of these is a conductor? (a) a woollen thread (b) a ceramic cup (c) a rubber band (d) a copper wire
4. 4.🔌 Most metals are good … (a) insulators (b) conductors (c) batteries (d) magnets only
5. 5.🔍 Which is the odd one out? (a) a rubber eraser (b) a safety pin (c) a metal paper clip (d) a copper wire
6. 6.🔍 Which is the odd one out? (a) a metal paper clip (b) a dry cork (c) a plastic straw (d) a cotton thread
7. 7.🔌 A gap of dry air between two wires acts as … (a) a cell (b) a conductor (c) an insulator (d) a switch that is ON
8. 8.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a cotton thread across the gap. Does the bulb glow? (a) Yes (b) No
9. 9.🔌 Is a rubber eraser a conductor or an insulator? (a) a conductor (b) an insulator
10. 10.🔍 Which is the odd one out? (a) a rubber band (b) a brass key (c) a plastic straw (d) a cotton thread
11. 11.🔌 Is a metal paper clip a conductor or an insulator? (a) a conductor (b) an insulator
12. 12.🔌 Is an iron nail a conductor or an insulator? (a) an insulator (b) a conductor
13. 13.True or false: a rubber band is an insulator. (a) False (b) True
14. 14.Which of these is an insulator? (a) an iron nail (b) a copper wire (c) a steel coin (d) a glass marble
15. 15.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put an iron nail across the gap. Does the bulb glow? (a) No (b) Yes
16. 16.Which of these is an insulator? (a) aluminium foil (b) a brass key (c) a steel spoon (d) a cotton thread
17. 17.Which of these is a conductor? (a) a rubber eraser (b) a dry cork (c) a woollen thread (d) a metal paper clip
18. 18.🔌 Which part of a screwdriver should an electrician hold? (a) the steel shaft (b) the metal tip (c) the bare end (d) the plastic handle
19. 19.True or false: a steel spoon is a conductor. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) a copper wire (b) a rubber band (c) a safety pin (d) aluminium foil
21. 21.🔌 Which metal is used for most electric wires at home? (a) copper (b) glass (c) plastic (d) rubber
22. 22.🔍 Which is the odd one out? (a) a steel coin (b) a brass key (c) a metal paper clip (d) a dry cork
23. 23.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel coin (c) a steel spoon (d) a metal paper clip
24. 24.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a safety pin across the gap. Does the bulb glow? (a) No (b) Yes
25. 25.True or false: a wooden stick is a conductor. (a) False (b) True
26. 26.🔌 Is a plastic ruler a conductor or an insulator? (a) an insulator (b) a conductor
27. 27.🔌 Is a wooden stick a conductor or an insulator? (a) a conductor (b) an insulator
28. 28.Which of these is an insulator? (a) a metal paper clip (b) an iron nail (c) a ceramic cup (d) a steel coin
29. 29.True or false: a woollen thread is an insulator. (a) True (b) False
30. 30.🔌 Is a ceramic cup a conductor or an insulator? (a) an insulator (b) a conductor
31. 31.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a glass marble across the gap. Does the bulb glow? (a) Yes (b) No
32. 32.🔌 Is a dry cork a conductor or an insulator? (a) an insulator (b) a conductor
33. 33.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
34. 34.🔍 Which is the odd one out? (a) a ceramic cup (b) a safety pin (c) aluminium foil (d) a metal paper clip
35. 35.True or false: a metal paper clip is a conductor. (a) True (b) False
36. 36.Which of these is an insulator? (a) an iron nail (b) a woollen thread (c) a copper wire (d) a safety pin
37. 37.Which of these is a conductor? (a) a rubber band (b) a glass marble (c) a steel spoon (d) a wooden stick
38. 38.Which of these is an insulator? (a) a safety pin (b) a plastic straw (c) aluminium foil (d) a steel spoon
39. 39.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic ruler across the gap. Does the bulb glow? (a) Yes (b) No
40. 40.Which of these is an insulator? (a) a safety pin (b) a brass key (c) a paper strip (d) an iron nail

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids