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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 95 · 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.Which of these is a conductor? (a) a plastic ruler (b) a plastic straw (c) a wooden stick (d) an iron nail
  2. 2.Which of these is a conductor? (a) a wooden stick (b) a cotton thread (c) aluminium foil (d) a rubber band
  3. 3.True or false: a graphite rod is an insulator. (a) True (b) False
  4. 4.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a woollen thread across the gap. Does the bulb glow? (a) Yes (b) No
  5. 5.🔌 Is a safety pin a conductor or an insulator? (a) a conductor (b) an insulator
  6. 6.🔍 Which is the odd one out? (a) aluminium foil (b) a steel spoon (c) a copper wire (d) a plastic straw
  7. 7.🔌 Is a plastic ruler a conductor or an insulator? (a) an insulator (b) a conductor
  8. 8.🔦 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) No (b) Yes
  9. 9.True or false: an iron nail is a conductor. (a) True (b) False
  10. 10.True or false: a rubber band is a conductor. (a) True (b) False
  11. 11.True or false: a metal paper clip is a conductor. (a) False (b) True
  12. 12.Which of these is a conductor? (a) a wooden stick (b) a brass key (c) a dry cork (d) a rubber band
  13. 13.True or false: a wooden stick is a conductor. (a) True (b) False
  14. 14.🔌 Is a woollen thread a conductor or an insulator? (a) an insulator (b) a conductor
  15. 15.True or false: an iron nail is an insulator. (a) True (b) False
  16. 16.🔌 Is a plastic straw a conductor or an insulator? (a) an insulator (b) a conductor
  17. 17.🔌 Which metal is used for most electric wires at home? (a) plastic (b) glass (c) rubber (d) copper
  18. 18.True or false: a copper wire is a conductor. (a) False (b) True
  19. 19.True or false: aluminium foil is a conductor. (a) True (b) False
  20. 20.True or false: a steel coin is a conductor. (a) False (b) True
  21. 21.Which of these is an insulator? (a) a graphite rod (b) a copper wire (c) a paper strip (d) a steel coin
  22. 22.🔦 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
  23. 23.🔍 Which is the odd one out? (a) a cotton thread (b) a metal paper clip (c) a plastic ruler (d) a woollen thread
  24. 24.🔌 Is a wooden stick a conductor or an insulator? (a) an insulator (b) a conductor
  25. 25.🔌 Why are electric wires covered in plastic? (a) plastic is a conductor (b) plastic makes current (c) plastic is an insulator (d) to make them heavy
  26. 26.True or false: a rubber band is an insulator. (a) False (b) True
  27. 27.🔌 Which part of a screwdriver should an electrician hold? (a) the steel shaft (b) the plastic handle (c) the metal tip (d) the bare end
  28. 28.🔌 Is a steel spoon a conductor or an insulator? (a) a conductor (b) an insulator
  29. 29.🔍 Which is the odd one out? (a) a woollen thread (b) a metal paper clip (c) a graphite rod (d) a safety pin
  30. 30.🔍 Which is the odd one out? (a) a woollen thread (b) a glass marble (c) a paper strip (d) a copper wire
  31. 31.🔍 Which is the odd one out? (a) a brass key (b) a dry cork (c) a copper wire (d) a safety pin
  32. 32.🔌 Is a brass key a conductor or an insulator? (a) a conductor (b) an insulator
  33. 33.True or false: a graphite rod is a conductor. (a) False (b) True
  34. 34.🔌 Is a graphite rod a conductor or an insulator? (a) a conductor (b) an insulator
  35. 35.🔌 Most metals are good … (a) insulators (b) batteries (c) magnets only (d) conductors
  36. 36.Which of these is an insulator? (a) aluminium foil (b) a steel spoon (c) a rubber eraser (d) an iron nail
  37. 37.Which of these is a conductor? (a) a wooden stick (b) a safety pin (c) a rubber eraser (d) a paper strip
  38. 38.Which of these is an insulator? (a) a steel coin (b) a graphite rod (c) a ceramic cup (d) a copper wire
  39. 39.Which of these is a conductor? (a) a steel coin (b) a rubber eraser (c) a ceramic cup (d) a plastic ruler
  40. 40.True or false: a brass key is a conductor. (a) False (b) True

Answer key

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

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