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Electronics Worksheet: Conductors and Insulators

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

Answer key

  1. copper
  2. a glass marble
  3. a dry cork
  4. an insulator
  5. True
  6. Yes
  7. False
  8. False
  9. False
  10. a plastic straw
  11. No
  12. False
  13. True
  14. a rubber band
  15. a conductor
  16. an insulator
  17. an insulator
  18. No
  19. a conductor
  20. a cotton thread
  21. aluminium foil
  22. True
  23. No
  24. Yes
  25. a graphite rod
  26. No
  27. Yes
  28. a wooden stick
  29. aluminium foil
  30. False
  31. a conductor
  32. a conductor
  33. an insulator
  34. a steel coin
  35. an insulator
  36. a wooden stick
  37. a steel spoon
  38. a steel spoon
  39. a steel coin
  40. a conductor

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