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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 27 · 40 questions
TalentJR

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.

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

Answer key

  1. an insulator
  2. an insulator
  3. Yes
  4. an insulator
  5. a ceramic cup
  6. True
  7. a conductor
  8. copper
  9. aluminium foil
  10. a cotton thread
  11. an iron nail
  12. plastic is an insulator
  13. a safety pin
  14. a glass marble
  15. a rubber band
  16. False
  17. No
  18. True
  19. a conductor
  20. Yes
  21. an insulator
  22. a wooden stick
  23. True
  24. a brass key
  25. No
  26. a copper wire
  27. False
  28. No
  29. a conductor
  30. Yes
  31. a rubber eraser
  32. True
  33. No
  34. True
  35. No
  36. a plastic ruler
  37. False
  38. False
  39. an insulator
  40. a conductor

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