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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 97 · 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.🔦 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) Yes (b) No
  2. 2.🔌 Why are electric wires covered in plastic? (a) to make them heavy (b) plastic is a conductor (c) plastic is an insulator (d) plastic makes current
  3. 3.🔌 Is a steel spoon a conductor or an insulator? (a) a conductor (b) an insulator
  4. 4.🔌 Is aluminium foil a conductor or an insulator? (a) a conductor (b) an insulator
  5. 5.True or false: a steel coin is a conductor. (a) True (b) False
  6. 6.🔌 Is a cotton thread a conductor or an insulator? (a) an insulator (b) a conductor
  7. 7.🔌 Is a glass marble a conductor or an insulator? (a) an insulator (b) a conductor
  8. 8.Which of these is a conductor? (a) a paper strip (b) a steel spoon (c) a cotton thread (d) a glass marble
  9. 9.🔌 Most metals are good … (a) magnets only (b) insulators (c) batteries (d) conductors
  10. 10.🔍 Which is the odd one out? (a) a rubber band (b) a steel spoon (c) aluminium foil (d) a safety pin
  11. 11.Which of these is an insulator? (a) a steel coin (b) a rubber band (c) an iron nail (d) a safety pin
  12. 12.Which of these is a conductor? (a) a wooden stick (b) a plastic straw (c) a cotton thread (d) a metal paper clip
  13. 13.🔦 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) Yes (b) No
  14. 14.Which of these is an insulator? (a) a safety pin (b) an iron nail (c) a wooden stick (d) a steel spoon
  15. 15.🔦 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) No (b) Yes
  16. 16.Which of these is a conductor? (a) a plastic straw (b) a rubber eraser (c) a copper wire (d) a paper strip
  17. 17.🔦 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
  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.🔌 Which part of a screwdriver should an electrician hold? (a) the metal tip (b) the bare end (c) the steel shaft (d) the plastic handle
  20. 20.🔍 Which is the odd one out? (a) a rubber eraser (b) a rubber band (c) a woollen thread (d) a steel coin
  21. 21.🔦 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
  22. 22.🔍 Which is the odd one out? (a) a plastic ruler (b) a woollen thread (c) a brass key (d) a cotton thread
  23. 23.Which of these is a conductor? (a) a steel coin (b) a wooden stick (c) a ceramic cup (d) a glass marble
  24. 24.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
  25. 25.🔌 Which metal is used for most electric wires at home? (a) plastic (b) glass (c) copper (d) rubber
  26. 26.🔌 Is a steel coin a conductor or an insulator? (a) an insulator (b) a conductor
  27. 27.True or false: a brass key is a conductor. (a) False (b) True
  28. 28.Which of these is an insulator? (a) a metal paper clip (b) a steel coin (c) a safety pin (d) a rubber eraser
  29. 29.Which of these is a conductor? (a) a plastic ruler (b) a woollen thread (c) aluminium foil (d) a plastic straw
  30. 30.Which of these is a conductor? (a) a rubber eraser (b) a plastic straw (c) an iron nail (d) a plastic ruler
  31. 31.True or false: an iron nail is a conductor. (a) True (b) False
  32. 32.🔍 Which is the odd one out? (a) aluminium foil (b) a dry cork (c) an iron nail (d) a brass key
  33. 33.🔦 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
  34. 34.🔍 Which is the odd one out? (a) an iron nail (b) a plastic straw (c) a rubber eraser (d) a glass marble
  35. 35.Which of these is a conductor? (a) a paper strip (b) a safety pin (c) a woollen thread (d) a rubber eraser
  36. 36.Which of these is a conductor? (a) a brass key (b) a cotton thread (c) a paper strip (d) a woollen thread
  37. 37.🔦 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
  38. 38.True or false: a safety pin is a conductor. (a) False (b) True
  39. 39.🔦 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
  40. 40.True or false: a metal paper clip is a conductor. (a) False (b) True

Answer key

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

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