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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 99 · 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.True or false: a ceramic cup is a conductor. (a) True (b) False
  2. 2.🔦 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
  3. 3.🔌 Why are electric wires covered in plastic? (a) plastic makes current (b) plastic is an insulator (c) to make them heavy (d) plastic is a conductor
  4. 4.🔌 Is a brass key a conductor or an insulator? (a) an insulator (b) a conductor
  5. 5.🔌 Is an iron nail a conductor or an insulator? (a) an insulator (b) a conductor
  6. 6.🔌 Is a plastic straw a conductor or an insulator? (a) an insulator (b) a conductor
  7. 7.🔌 Which part of a screwdriver should an electrician hold? (a) the bare end (b) the plastic handle (c) the steel shaft (d) the metal tip
  8. 8.🔌 Is a steel spoon a conductor or an insulator? (a) an insulator (b) a conductor
  9. 9.Which of these is a conductor? (a) a paper strip (b) a ceramic cup (c) a plastic ruler (d) an iron nail
  10. 10.True or false: aluminium foil is an insulator. (a) False (b) True
  11. 11.True or false: a metal paper clip is an insulator. (a) True (b) False
  12. 12.🔍 Which is the odd one out? (a) a plastic straw (b) a brass key (c) a woollen thread (d) a glass marble
  13. 13.🔦 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
  14. 14.🔌 Most metals are good … (a) insulators (b) batteries (c) conductors (d) magnets only
  15. 15.🔌 Is aluminium foil a conductor or an insulator? (a) a conductor (b) an insulator
  16. 16.Which of these is a conductor? (a) a paper strip (b) aluminium foil (c) a plastic straw (d) a plastic ruler
  17. 17.True or false: a graphite rod is an insulator. (a) True (b) False
  18. 18.True or false: a woollen thread is an insulator. (a) False (b) True
  19. 19.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
  20. 20.Which of these is a conductor? (a) a cotton thread (b) a steel spoon (c) a glass marble (d) a wooden stick
  21. 21.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a metal paper clip across the gap. Does the bulb glow? (a) No (b) Yes
  22. 22.🔌 Is a metal paper clip a conductor or an insulator? (a) a conductor (b) an insulator
  23. 23.🔍 Which is the odd one out? (a) a plastic ruler (b) a safety pin (c) an iron nail (d) a steel spoon
  24. 24.🔦 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
  25. 25.🔦 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
  26. 26.🔍 Which is the odd one out? (a) a copper wire (b) a steel spoon (c) an iron nail (d) a wooden stick
  27. 27.Which of these is an insulator? (a) a graphite rod (b) a steel coin (c) a rubber eraser (d) a steel spoon
  28. 28.🔌 Is a cotton thread a conductor or an insulator? (a) a conductor (b) an insulator
  29. 29.True or false: a metal paper clip is a conductor. (a) False (b) True
  30. 30.🔍 Which is the odd one out? (a) a steel coin (b) an iron nail (c) a rubber eraser (d) a safety pin
  31. 31.True or false: a paper strip is a conductor. (a) True (b) False
  32. 32.Which of these is a conductor? (a) a brass key (b) a paper strip (c) a woollen thread (d) a ceramic cup
  33. 33.True or false: a plastic straw is a conductor. (a) True (b) False
  34. 34.True or false: a steel spoon is an insulator. (a) False (b) True
  35. 35.Which of these is a conductor? (a) a safety pin (b) a cotton thread (c) a plastic ruler (d) a plastic straw
  36. 36.Which of these is an insulator? (a) a brass key (b) a safety pin (c) a steel coin (d) a glass marble
  37. 37.Which of these is an insulator? (a) aluminium foil (b) an iron nail (c) a plastic ruler (d) a metal paper clip
  38. 38.Which of these is an insulator? (a) a safety pin (b) aluminium foil (c) a graphite rod (d) a paper strip
  39. 39.True or false: a rubber band is a conductor. (a) True (b) False
  40. 40.🔍 Which is the odd one out? (a) a glass marble (b) a copper wire (c) a steel spoon (d) a metal paper clip

Answer key

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

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