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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 110 · 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 is the odd one out? (a) a steel coin (b) an iron nail (c) a steel spoon (d) a woollen thread
  2. 2.🔍 Which is the odd one out? (a) a copper wire (b) aluminium foil (c) a wooden stick (d) a metal paper clip
  3. 3.Which of these is a conductor? (a) a paper strip (b) a rubber band (c) an iron nail (d) a dry cork
  4. 4.🔦 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) Yes (b) No
  5. 5.🔌 Is a brass key a conductor or an insulator? (a) an insulator (b) a conductor
  6. 6.🔌 Is a plastic ruler a conductor or an insulator? (a) an insulator (b) a conductor
  7. 7.Which of these is an insulator? (a) a steel spoon (b) a plastic ruler (c) aluminium foil (d) a copper wire
  8. 8.🔦 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
  9. 9.True or false: a metal paper clip is an insulator. (a) False (b) True
  10. 10.Which of these is a conductor? (a) a wooden stick (b) a glass marble (c) a paper strip (d) a steel spoon
  11. 11.🔌 Is a glass marble a conductor or an insulator? (a) a conductor (b) an insulator
  12. 12.True or false: a dry cork is a conductor. (a) True (b) False
  13. 13.🔌 Is a plastic straw a conductor or an insulator? (a) a conductor (b) an insulator
  14. 14.🔍 Which is the odd one out? (a) a graphite rod (b) a copper wire (c) a rubber band (d) a metal paper clip
  15. 15.🔌 Which part of a screwdriver should an electrician hold? (a) the bare end (b) the metal tip (c) the plastic handle (d) the steel shaft
  16. 16.🔍 Which is the odd one out? (a) an iron nail (b) a plastic straw (c) a paper strip (d) a rubber eraser
  17. 17.🔌 Is aluminium foil a conductor or an insulator? (a) an insulator (b) a conductor
  18. 18.🔌 Why are electric wires covered in plastic? (a) plastic is a conductor (b) plastic makes current (c) to make them heavy (d) plastic is an insulator
  19. 19.🔌 Is a woollen thread a conductor or an insulator? (a) an insulator (b) a conductor
  20. 20.🔦 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
  21. 21.🔌 Is an iron nail a conductor or an insulator? (a) a conductor (b) an insulator
  22. 22.🔍 Which is the odd one out? (a) a wooden stick (b) a dry cork (c) a glass marble (d) a brass key
  23. 23.🔌 Which metal is used for most electric wires at home? (a) copper (b) rubber (c) plastic (d) glass
  24. 24.🔍 Which is the odd one out? (a) a steel spoon (b) a safety pin (c) aluminium foil (d) a plastic straw
  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 is the odd one out? (a) a copper wire (b) a cotton thread (c) a rubber eraser (d) a glass marble
  27. 27.True or false: a steel coin is an insulator. (a) False (b) True
  28. 28.Which of these is an insulator? (a) a brass key (b) a plastic straw (c) an iron nail (d) aluminium foil
  29. 29.True or false: a rubber band is a conductor. (a) True (b) False
  30. 30.🔌 Is a copper wire a conductor or an insulator? (a) a conductor (b) an insulator
  31. 31.True or false: a safety pin is an insulator. (a) False (b) True
  32. 32.Which of these is an insulator? (a) a copper wire (b) an iron nail (c) a steel coin (d) a ceramic cup
  33. 33.Which of these is a conductor? (a) a plastic straw (b) a copper wire (c) a woollen thread (d) a cotton thread
  34. 34.Which of these is an insulator? (a) a metal paper clip (b) a rubber band (c) a copper wire (d) a brass key
  35. 35.Which of these is an insulator? (a) a copper wire (b) a steel spoon (c) an iron nail (d) a woollen thread
  36. 36.🔦 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) No (b) Yes
  37. 37.Which of these is a conductor? (a) a plastic straw (b) a rubber band (c) aluminium foil (d) a dry cork
  38. 38.True or false: a graphite rod is an insulator. (a) False (b) True
  39. 39.Which of these is a conductor? (a) a brass key (b) a rubber band (c) a ceramic cup (d) a glass marble
  40. 40.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a cotton thread (d) a plastic straw

Answer key

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

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