Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 59 · 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.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a rubber band across the gap. Does the bulb glow? (a) No (b) Yes
2. 2.True or false: a paper strip is an insulator. (a) True (b) False
3. 3.🔌 Most metals are good … (a) batteries (b) conductors (c) magnets only (d) insulators
4. 4.True or false: a graphite rod is an insulator. (a) False (b) True
5. 5.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a brass key across the gap. Does the bulb glow? (a) No (b) Yes
6. 6.Which of these is a conductor? (a) a woollen thread (b) a metal paper clip (c) a plastic straw (d) a ceramic cup
7. 7.True or false: a steel spoon is a conductor. (a) False (b) True
8. 8.🔦 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) No (b) Yes
9. 9.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a metal paper clip across the gap. Does the bulb glow? (a) Yes (b) No
10. 10.🔍 Which is the odd one out? (a) a wooden stick (b) a graphite rod (c) a woollen thread (d) a glass marble
11. 11.True or false: a copper wire is an insulator. (a) False (b) True
12. 12.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic straw across the gap. Does the bulb glow? (a) Yes (b) No
13. 13.🔍 Which is the odd one out? (a) aluminium foil (b) a rubber band (c) a steel spoon (d) a graphite rod
14. 14.🔌 Is a rubber band a conductor or an insulator? (a) a conductor (b) an insulator
15. 15.🔌 A gap of dry air between two wires acts as … (a) an insulator (b) a cell (c) a switch that is ON (d) a conductor
16. 16.🔍 Which is the odd one out? (a) a copper wire (b) a dry cork (c) a wooden stick (d) a plastic straw
17. 17.🔦 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) No (b) Yes
18. 18.Which of these is an insulator? (a) a steel coin (b) a paper strip (c) a copper wire (d) a brass key
19. 19.🔌 Which part of a screwdriver should an electrician hold? (a) the metal tip (b) the bare end (c) the plastic handle (d) the steel shaft
20. 20.Which of these is a conductor? (a) a rubber band (b) a wooden stick (c) a steel spoon (d) a cotton thread
21. 21.🔍 Which is the odd one out? (a) a safety pin (b) a rubber eraser (c) a graphite rod (d) aluminium foil
22. 22.🔍 Which is the odd one out? (a) an iron nail (b) a paper strip (c) a steel coin (d) a safety pin
23. 23.🔍 Which is the odd one out? (a) a cotton thread (b) a ceramic cup (c) a plastic ruler (d) a steel coin
24. 24.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel coin across the gap. Does the bulb glow? (a) Yes (b) No
25. 25.🔍 Which is the odd one out? (a) a cotton thread (b) a ceramic cup (c) a rubber band (d) an iron nail
26. 26.🔍 Which is the odd one out? (a) a rubber band (b) a plastic ruler (c) a ceramic cup (d) a safety pin
27. 27.True or false: a glass marble is a conductor. (a) False (b) True
28. 28.Which of these is an insulator? (a) a metal paper clip (b) a wooden stick (c) an iron nail (d) a copper wire
29. 29.🔦 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
30. 30.True or false: a rubber band is an insulator. (a) False (b) True
31. 31.True or false: a woollen thread is an insulator. (a) False (b) True
32. 32.Which of these is a conductor? (a) a paper strip (b) a cotton thread (c) a ceramic cup (d) aluminium foil
33. 33.🔌 Is a paper strip a conductor or an insulator? (a) an insulator (b) a conductor
34. 34.Which of these is a conductor? (a) a wooden stick (b) a plastic straw (c) an iron nail (d) a rubber band
35. 35.Which of these is a conductor? (a) a safety pin (b) a cotton thread (c) a paper strip (d) a glass marble
36. 36.🔌 Which metal is used for most electric wires at home? (a) glass (b) rubber (c) plastic (d) copper
37. 37.🔍 Which is the odd one out? (a) a safety pin (b) a steel spoon (c) a metal paper clip (d) a woollen thread
38. 38.🔌 Why are electric wires covered in plastic? (a) plastic is an insulator (b) plastic is a conductor (c) plastic makes current (d) to make them heavy
39. 39.True or false: aluminium foil is an insulator. (a) True (b) False
40. 40.Which of these is an insulator? (a) a metal paper clip (b) aluminium foil (c) a plastic straw (d) a steel coin

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