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Electronics Worksheet: Conductors and Insulators

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

Answer key

  1. plastic is an insulator
  2. an insulator
  3. No
  4. a copper wire
  5. an insulator
  6. True
  7. a ceramic cup
  8. True
  9. a metal paper clip
  10. False
  11. an insulator
  12. a conductor
  13. an insulator
  14. Yes
  15. an insulator
  16. an insulator
  17. a brass key
  18. Yes
  19. True
  20. a conductor
  21. a conductor
  22. a steel spoon
  23. Yes
  24. a paper strip
  25. an iron nail
  26. No
  27. an insulator
  28. False
  29. a plastic straw
  30. a rubber eraser
  31. a dry cork
  32. a brass key
  33. True
  34. True
  35. Yes
  36. No
  37. aluminium foil
  38. True
  39. False
  40. copper

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