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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 44 · 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 metal paper clip a conductor or an insulator? (a) an insulator (b) a conductor
  2. 2.True or false: a steel spoon is an insulator. (a) False (b) True
  3. 3.Which of these is an insulator? (a) a steel spoon (b) a dry cork (c) an iron nail (d) aluminium foil
  4. 4.🔍 Which is the odd one out? (a) a brass key (b) a metal paper clip (c) an iron nail (d) a rubber band
  5. 5.🔦 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) Yes (b) No
  6. 6.🔌 Most metals are good … (a) batteries (b) magnets only (c) insulators (d) conductors
  7. 7.True or false: a woollen thread is a conductor. (a) False (b) True
  8. 8.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a safety pin across the gap. Does the bulb glow? (a) Yes (b) No
  9. 9.🔦 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
  10. 10.Which of these is a conductor? (a) a rubber eraser (b) a steel spoon (c) a glass marble (d) a wooden stick
  11. 11.🔦 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) Yes (b) No
  12. 12.True or false: a cotton thread is an insulator. (a) False (b) True
  13. 13.🔌 Is a plastic straw a conductor or an insulator? (a) a conductor (b) an insulator
  14. 14.True or false: a paper strip is an insulator. (a) False (b) True
  15. 15.Which of these is an insulator? (a) a plastic ruler (b) a graphite rod (c) a copper wire (d) a steel coin
  16. 16.🔦 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
  17. 17.Which of these is a conductor? (a) a glass marble (b) an iron nail (c) a wooden stick (d) a ceramic cup
  18. 18.True or false: a steel spoon is a conductor. (a) True (b) False
  19. 19.🔌 Is aluminium foil a conductor or an insulator? (a) a conductor (b) an insulator
  20. 20.🔌 Why are electric wires covered in plastic? (a) plastic is an insulator (b) to make them heavy (c) plastic is a conductor (d) plastic makes current
  21. 21.True or false: a steel coin is an insulator. (a) False (b) True
  22. 22.🔌 Which part of a screwdriver should an electrician hold? (a) the steel shaft (b) the metal tip (c) the plastic handle (d) the bare end
  23. 23.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a copper wire (d) an iron nail
  24. 24.Which of these is a conductor? (a) a woollen thread (b) a safety pin (c) a plastic straw (d) a plastic ruler
  25. 25.Which of these is a conductor? (a) a steel coin (b) a plastic straw (c) a glass marble (d) a rubber eraser
  26. 26.🔌 Which metal is used for most electric wires at home? (a) glass (b) copper (c) plastic (d) rubber
  27. 27.Which of these is an insulator? (a) a steel spoon (b) a wooden stick (c) a graphite rod (d) a brass key
  28. 28.True or false: a wooden stick is an insulator. (a) False (b) True
  29. 29.🔍 Which is the odd one out? (a) a graphite rod (b) a steel spoon (c) a wooden stick (d) an iron nail
  30. 30.🔌 Is a rubber eraser a conductor or an insulator? (a) a conductor (b) an insulator
  31. 31.🔌 Is a ceramic cup a conductor or an insulator? (a) a conductor (b) an insulator
  32. 32.🔍 Which is the odd one out? (a) a plastic ruler (b) a dry cork (c) a wooden stick (d) a safety pin
  33. 33.🔍 Which is the odd one out? (a) a graphite rod (b) a dry cork (c) an iron nail (d) aluminium foil
  34. 34.🔦 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) No (b) Yes
  35. 35.True or false: an iron nail is an insulator. (a) True (b) False
  36. 36.True or false: a rubber eraser is an insulator. (a) False (b) True
  37. 37.🔌 Is a steel spoon a conductor or an insulator? (a) an insulator (b) a conductor
  38. 38.🔦 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
  39. 39.True or false: a safety pin is an insulator. (a) True (b) False
  40. 40.Which of these is an insulator? (a) a rubber eraser (b) an iron nail (c) a graphite rod (d) a brass key

Answer key

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

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