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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 47 · 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 an insulator? (a) a wooden stick (b) an iron nail (c) a steel coin (d) a safety pin
  2. 2.Which of these is an insulator? (a) a dry cork (b) a graphite rod (c) aluminium foil (d) a metal paper clip
  3. 3.🔍 Which is the odd one out? (a) a plastic ruler (b) a safety pin (c) a ceramic cup (d) a rubber band
  4. 4.🔌 Is a graphite rod a conductor or an insulator? (a) a conductor (b) an insulator
  5. 5.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a copper wire across the gap. Does the bulb glow? (a) Yes (b) No
  6. 6.🔌 Why are electric wires covered in plastic? (a) to make them heavy (b) plastic makes current (c) plastic is a conductor (d) plastic is an insulator
  7. 7.Which of these is a conductor? (a) a ceramic cup (b) a plastic straw (c) a paper strip (d) a brass key
  8. 8.🔦 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
  9. 9.🔌 Is a steel spoon a conductor or an insulator? (a) a conductor (b) an insulator
  10. 10.🔦 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) No (b) Yes
  11. 11.🔍 Which is the odd one out? (a) a steel spoon (b) a dry cork (c) a wooden stick (d) a rubber eraser
  12. 12.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic straw (c) aluminium foil (d) an iron nail
  13. 13.🔍 Which is the odd one out? (a) a rubber band (b) a rubber eraser (c) a ceramic cup (d) an iron nail
  14. 14.True or false: a plastic straw is a conductor. (a) True (b) False
  15. 15.Which of these is an insulator? (a) a metal paper clip (b) a steel spoon (c) a steel coin (d) a rubber band
  16. 16.True or false: a wooden stick is a conductor. (a) True (b) False
  17. 17.🔌 Most metals are good … (a) batteries (b) conductors (c) magnets only (d) insulators
  18. 18.True or false: a wooden stick is an insulator. (a) True (b) False
  19. 19.🔌 Is a rubber eraser a conductor or an insulator? (a) a conductor (b) an insulator
  20. 20.Which of these is an insulator? (a) a rubber eraser (b) a brass key (c) an iron nail (d) a steel coin
  21. 21.True or false: an iron nail is an insulator. (a) False (b) True
  22. 22.True or false: a copper wire is an insulator. (a) False (b) True
  23. 23.True or false: a rubber eraser is a conductor. (a) False (b) True
  24. 24.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic straw (c) a steel coin (d) a paper strip
  25. 25.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
  26. 26.🔌 Which metal is used for most electric wires at home? (a) rubber (b) glass (c) plastic (d) copper
  27. 27.True or false: a dry cork is an insulator. (a) False (b) True
  28. 28.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a ceramic cup across the gap. Does the bulb glow? (a) Yes (b) No
  29. 29.Which of these is a conductor? (a) a glass marble (b) a safety pin (c) a woollen thread (d) a ceramic cup
  30. 30.🔍 Which is the odd one out? (a) a graphite rod (b) an iron nail (c) a brass key (d) a glass marble
  31. 31.🔌 Is a metal paper clip a conductor or an insulator? (a) a conductor (b) an insulator
  32. 32.Which of these is a conductor? (a) aluminium foil (b) a woollen thread (c) a paper strip (d) a dry cork
  33. 33.🔍 Which is the odd one out? (a) a dry cork (b) a plastic straw (c) aluminium foil (d) a rubber band
  34. 34.🔦 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
  35. 35.True or false: a woollen thread is an insulator. (a) True (b) False
  36. 36.🔍 Which is the odd one out? (a) a brass key (b) a steel spoon (c) a plastic ruler (d) an iron nail
  37. 37.Which of these is a conductor? (a) a cotton thread (b) a dry cork (c) a copper wire (d) a ceramic cup
  38. 38.🔌 Is a ceramic cup a conductor or an insulator? (a) an insulator (b) a conductor
  39. 39.True or false: a safety pin is an insulator. (a) True (b) False
  40. 40.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic ruler across the gap. Does the bulb glow? (a) Yes (b) No

Answer key

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

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