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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 49 · 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 an iron nail a conductor or an insulator? (a) a conductor (b) an insulator
  2. 2.🔍 Which is the odd one out? (a) aluminium foil (b) a cotton thread (c) a paper strip (d) a dry cork
  3. 3.Which of these is a conductor? (a) a wooden stick (b) a dry cork (c) a metal paper clip (d) a plastic straw
  4. 4.Which of these is an insulator? (a) a copper wire (b) a brass key (c) a steel spoon (d) a rubber eraser
  5. 5.🔍 Which is the odd one out? (a) a glass marble (b) a metal paper clip (c) a steel spoon (d) aluminium foil
  6. 6.🔌 Most metals are good … (a) conductors (b) insulators (c) magnets only (d) batteries
  7. 7.🔍 Which is the odd one out? (a) an iron nail (b) a steel coin (c) a graphite rod (d) a paper strip
  8. 8.🔦 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
  9. 9.Which of these is a conductor? (a) a rubber eraser (b) aluminium foil (c) a woollen thread (d) a rubber band
  10. 10.🔌 Why are electric wires covered in plastic? (a) plastic makes current (b) plastic is a conductor (c) to make them heavy (d) plastic is an insulator
  11. 11.True or false: a plastic ruler is a conductor. (a) False (b) True
  12. 12.True or false: a cotton thread is an insulator. (a) True (b) False
  13. 13.🔍 Which is the odd one out? (a) a metal paper clip (b) a steel coin (c) a rubber band (d) a copper wire
  14. 14.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
  15. 15.🔦 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
  16. 16.Which of these is an insulator? (a) a ceramic cup (b) a graphite rod (c) a steel spoon (d) a metal paper clip
  17. 17.🔌 Is a rubber band a conductor or an insulator? (a) an insulator (b) a conductor
  18. 18.🔌 Is a metal paper clip a conductor or an insulator? (a) a conductor (b) an insulator
  19. 19.🔌 Is a wooden stick a conductor or an insulator? (a) an insulator (b) a conductor
  20. 20.True or false: a copper wire is a conductor. (a) True (b) False
  21. 21.🔌 Is a brass key a conductor or an insulator? (a) an insulator (b) a conductor
  22. 22.🔌 Is a ceramic cup a conductor or an insulator? (a) an insulator (b) a conductor
  23. 23.Which of these is an insulator? (a) a cotton thread (b) a copper wire (c) an iron nail (d) a steel coin
  24. 24.🔦 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) No (b) Yes
  25. 25.🔌 Which metal is used for most electric wires at home? (a) plastic (b) glass (c) rubber (d) copper
  26. 26.Which of these is an insulator? (a) a paper strip (b) a steel coin (c) an iron nail (d) aluminium foil
  27. 27.🔍 Which is the odd one out? (a) a dry cork (b) a plastic straw (c) a steel spoon (d) a glass marble
  28. 28.🔍 Which is the odd one out? (a) a safety pin (b) an iron nail (c) a copper wire (d) a woollen thread
  29. 29.🔍 Which is the odd one out? (a) a plastic ruler (b) a copper wire (c) a cotton thread (d) a plastic straw
  30. 30.Which of these is a conductor? (a) a steel spoon (b) a rubber band (c) a rubber eraser (d) a plastic straw
  31. 31.Which of these is a conductor? (a) a copper wire (b) a plastic straw (c) a glass marble (d) a rubber band
  32. 32.🔌 Which part of a screwdriver should an electrician hold? (a) the plastic handle (b) the metal tip (c) the bare end (d) the steel shaft
  33. 33.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a brass key across the gap. Does the bulb glow? (a) Yes (b) No
  34. 34.True or false: a paper strip is a conductor. (a) False (b) True
  35. 35.Which of these is a conductor? (a) a dry cork (b) a plastic ruler (c) a ceramic cup (d) a brass key
  36. 36.True or false: a glass marble is a conductor. (a) False (b) True
  37. 37.True or false: a metal paper clip is a conductor. (a) True (b) False
  38. 38.🔍 Which is the odd one out? (a) a woollen thread (b) a ceramic cup (c) a plastic ruler (d) an iron nail
  39. 39.🔦 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) Yes (b) No
  40. 40.🔍 Which is the odd one out? (a) a cotton thread (b) a dry cork (c) a rubber band (d) a metal paper clip

Answer key

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

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