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Electronics Worksheet: Conductors and Insulators

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

Answer key

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

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