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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 45 · 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 cotton thread across the gap. Does the bulb glow? (a) No (b) Yes
  2. 2.Which of these is an insulator? (a) a steel spoon (b) an iron nail (c) a copper wire (d) a glass marble
  3. 3.🔌 Why are electric wires covered in plastic? (a) plastic makes current (b) to make them heavy (c) plastic is a conductor (d) plastic is an insulator
  4. 4.🔦 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) No (b) Yes
  5. 5.True or false: a brass key is an insulator. (a) True (b) False
  6. 6.🔌 Is a rubber band a conductor or an insulator? (a) an insulator (b) a conductor
  7. 7.🔍 Which is the odd one out? (a) a plastic straw (b) a dry cork (c) a woollen thread (d) a copper wire
  8. 8.🔌 Is aluminium foil a conductor or an insulator? (a) an insulator (b) a conductor
  9. 9.Which of these is an insulator? (a) a copper wire (b) a safety pin (c) a cotton thread (d) a steel coin
  10. 10.🔌 Which metal is used for most electric wires at home? (a) plastic (b) copper (c) glass (d) rubber
  11. 11.True or false: a dry cork is a conductor. (a) False (b) True
  12. 12.🔌 Is a rubber eraser a conductor or an insulator? (a) an insulator (b) a conductor
  13. 13.True or false: a steel coin is a conductor. (a) False (b) True
  14. 14.🔍 Which is the odd one out? (a) a safety pin (b) an iron nail (c) a plastic straw (d) a copper wire
  15. 15.🔍 Which is the odd one out? (a) a rubber band (b) a safety pin (c) a dry cork (d) a plastic straw
  16. 16.🔌 Most metals are good … (a) magnets only (b) insulators (c) batteries (d) conductors
  17. 17.🔦 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) No (b) Yes
  18. 18.🔌 Is a paper strip a conductor or an insulator? (a) a conductor (b) an insulator
  19. 19.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a glass marble across the gap. Does the bulb glow? (a) No (b) Yes
  20. 20.🔍 Which is the odd one out? (a) a rubber band (b) an iron nail (c) a wooden stick (d) a plastic ruler
  21. 21.🔌 Which part of a screwdriver should an electrician hold? (a) the metal tip (b) the bare end (c) the plastic handle (d) the steel shaft
  22. 22.True or false: a steel coin is an insulator. (a) False (b) True
  23. 23.🔌 Is a steel coin a conductor or an insulator? (a) an insulator (b) a conductor
  24. 24.🔌 Is a metal paper clip a conductor or an insulator? (a) a conductor (b) an insulator
  25. 25.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a rubber band across the gap. Does the bulb glow? (a) Yes (b) No
  26. 26.Which of these is an insulator? (a) a graphite rod (b) an iron nail (c) aluminium foil (d) a rubber band
  27. 27.🔌 Is a cotton thread a conductor or an insulator? (a) an insulator (b) a conductor
  28. 28.True or false: a metal paper clip is an insulator. (a) False (b) True
  29. 29.🔦 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
  30. 30.🔌 Is a plastic ruler a conductor or an insulator? (a) an insulator (b) a conductor
  31. 31.🔦 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
  32. 32.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber band (c) a steel coin (d) a ceramic cup
  33. 33.True or false: a copper wire is an insulator. (a) False (b) True
  34. 34.🔍 Which is the odd one out? (a) a steel spoon (b) a rubber eraser (c) a glass marble (d) a plastic straw
  35. 35.True or false: an iron nail is an insulator. (a) True (b) False
  36. 36.Which of these is an insulator? (a) a plastic ruler (b) a brass key (c) aluminium foil (d) a copper wire
  37. 37.True or false: a rubber band is a conductor. (a) True (b) False
  38. 38.🔌 Is a safety pin a conductor or an insulator? (a) a conductor (b) an insulator
  39. 39.🔍 Which is the odd one out? (a) a steel coin (b) aluminium foil (c) a cotton thread (d) a safety pin
  40. 40.True or false: an iron nail is a conductor. (a) False (b) True

Answer key

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

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