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Electronics Worksheet: Conductors and Insulators

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

Answer key

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

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