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Electronics Worksheet: Conductors and Insulators

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

Answer key

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

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