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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 56 · 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 plastic ruler a conductor or an insulator? (a) an insulator (b) a conductor
  2. 2.🔦 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
  3. 3.Which of these is a conductor? (a) a rubber band (b) aluminium foil (c) a wooden stick (d) a plastic straw
  4. 4.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
  5. 5.🔌 Is a brass key a conductor or an insulator? (a) a conductor (b) an insulator
  6. 6.🔍 Which is the odd one out? (a) a rubber band (b) a copper wire (c) a graphite rod (d) a metal paper clip
  7. 7.Which of these is an insulator? (a) a brass key (b) an iron nail (c) a metal paper clip (d) a glass marble
  8. 8.🔦 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
  9. 9.🔦 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
  10. 10.🔌 Which part of a screwdriver should an electrician hold? (a) the plastic handle (b) the metal tip (c) the steel shaft (d) the bare end
  11. 11.Which of these is a conductor? (a) a rubber eraser (b) a plastic ruler (c) a brass key (d) a plastic straw
  12. 12.🔌 Is a ceramic cup a conductor or an insulator? (a) an insulator (b) a conductor
  13. 13.True or false: a copper wire is a conductor. (a) True (b) False
  14. 14.Which of these is an insulator? (a) a steel coin (b) a steel spoon (c) a dry cork (d) a graphite rod
  15. 15.🔍 Which is the odd one out? (a) a glass marble (b) a plastic straw (c) a brass key (d) a dry cork
  16. 16.True or false: a paper strip is an insulator. (a) False (b) True
  17. 17.🔌 Is a dry cork a conductor or an insulator? (a) an insulator (b) a conductor
  18. 18.Which of these is an insulator? (a) aluminium foil (b) a copper wire (c) an iron nail (d) a wooden stick
  19. 19.True or false: a steel coin is an insulator. (a) False (b) True
  20. 20.True or false: a steel coin is a conductor. (a) True (b) False
  21. 21.Which of these is a conductor? (a) a cotton thread (b) a rubber band (c) a wooden stick (d) a metal paper clip
  22. 22.🔌 Is a steel spoon a conductor or an insulator? (a) a conductor (b) an insulator
  23. 23.🔍 Which is the odd one out? (a) a metal paper clip (b) a steel spoon (c) a rubber eraser (d) a copper wire
  24. 24.🔦 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
  25. 25.🔍 Which is the odd one out? (a) a cotton thread (b) a woollen thread (c) a plastic ruler (d) a copper wire
  26. 26.True or false: a steel spoon is an insulator. (a) True (b) False
  27. 27.🔍 Which is the odd one out? (a) an iron nail (b) a steel spoon (c) a paper strip (d) a brass key
  28. 28.🔦 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
  29. 29.🔌 Why are electric wires covered in plastic? (a) plastic makes current (b) to make them heavy (c) plastic is an insulator (d) plastic is a conductor
  30. 30.🔦 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
  31. 31.🔦 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) No (b) Yes
  32. 32.🔦 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
  33. 33.🔍 Which is the odd one out? (a) a glass marble (b) a safety pin (c) a copper wire (d) a steel spoon
  34. 34.True or false: aluminium foil is an insulator. (a) True (b) False
  35. 35.🔦 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) Yes (b) No
  36. 36.🔌 Is a woollen thread a conductor or an insulator? (a) a conductor (b) an insulator
  37. 37.🔌 Is a rubber eraser a conductor or an insulator? (a) a conductor (b) an insulator
  38. 38.Which of these is a conductor? (a) a steel spoon (b) a plastic straw (c) a plastic ruler (d) a rubber eraser
  39. 39.🔌 Is aluminium foil a conductor or an insulator? (a) a conductor (b) an insulator
  40. 40.Which of these is an insulator? (a) a steel spoon (b) a copper wire (c) a ceramic cup (d) an iron nail

Answer key

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

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