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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 89 · 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 is the odd one out? (a) a metal paper clip (b) a woollen thread (c) a glass marble (d) a cotton thread
  2. 2.🔦 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
  3. 3.🔌 Is a paper strip a conductor or an insulator? (a) an insulator (b) a conductor
  4. 4.🔦 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
  5. 5.🔦 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
  6. 6.True or false: a steel coin is an insulator. (a) False (b) True
  7. 7.🔌 Why are electric wires covered in plastic? (a) plastic is a conductor (b) plastic makes current (c) to make them heavy (d) plastic is an insulator
  8. 8.Which of these is an insulator? (a) a safety pin (b) a copper wire (c) a steel spoon (d) a paper strip
  9. 9.🔌 Most metals are good … (a) batteries (b) conductors (c) magnets only (d) insulators
  10. 10.Which of these is an insulator? (a) a steel spoon (b) a steel coin (c) a rubber eraser (d) an iron nail
  11. 11.🔍 Which is the odd one out? (a) a rubber band (b) a plastic straw (c) a rubber eraser (d) a steel coin
  12. 12.Which of these is an insulator? (a) a cotton thread (b) a steel spoon (c) an iron nail (d) a steel coin
  13. 13.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a graphite rod across the gap. Does the bulb glow? (a) No (b) Yes
  14. 14.Which of these is an insulator? (a) a plastic ruler (b) a copper wire (c) a safety pin (d) an iron nail
  15. 15.Which of these is an insulator? (a) a graphite rod (b) a plastic straw (c) a metal paper clip (d) a copper wire
  16. 16.🔌 Which part of a screwdriver should an electrician hold? (a) the bare end (b) the plastic handle (c) the metal tip (d) the steel shaft
  17. 17.Which of these is a conductor? (a) a ceramic cup (b) aluminium foil (c) a rubber band (d) a paper strip
  18. 18.Which of these is a conductor? (a) a ceramic cup (b) a paper strip (c) a plastic straw (d) a metal paper clip
  19. 19.Which of these is an insulator? (a) a safety pin (b) aluminium foil (c) a steel coin (d) a woollen thread
  20. 20.True or false: a plastic straw is a conductor. (a) True (b) False
  21. 21.🔌 Is aluminium foil a conductor or an insulator? (a) an insulator (b) a conductor
  22. 22.🔍 Which is the odd one out? (a) a cotton thread (b) a copper wire (c) aluminium foil (d) a graphite rod
  23. 23.🔍 Which is the odd one out? (a) a metal paper clip (b) a glass marble (c) a steel spoon (d) an iron nail
  24. 24.True or false: a woollen thread is an insulator. (a) True (b) False
  25. 25.🔦 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
  26. 26.True or false: a graphite rod is an insulator. (a) True (b) False
  27. 27.🔌 Which metal is used for most electric wires at home? (a) rubber (b) plastic (c) glass (d) copper
  28. 28.🔌 Is a wooden stick a conductor or an insulator? (a) a conductor (b) an insulator
  29. 29.🔌 Is a plastic ruler a conductor or an insulator? (a) a conductor (b) an insulator
  30. 30.🔍 Which is the odd one out? (a) a safety pin (b) a graphite rod (c) an iron nail (d) a plastic straw
  31. 31.🔌 Is a graphite rod a conductor or an insulator? (a) a conductor (b) an insulator
  32. 32.🔦 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) Yes (b) No
  33. 33.🔍 Which is the odd one out? (a) a steel coin (b) a copper wire (c) a graphite rod (d) a wooden stick
  34. 34.🔌 Is a dry cork a conductor or an insulator? (a) an insulator (b) a conductor
  35. 35.🔍 Which is the odd one out? (a) a steel coin (b) an iron nail (c) a brass key (d) a woollen thread
  36. 36.Which of these is a conductor? (a) a glass marble (b) a wooden stick (c) an iron nail (d) a dry cork
  37. 37.True or false: a woollen thread is a conductor. (a) False (b) True
  38. 38.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
  39. 39.🔌 Is a glass marble a conductor or an insulator? (a) an insulator (b) a conductor
  40. 40.True or false: a cotton thread is an insulator. (a) False (b) True

Answer key

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

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