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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 1 · 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 of these is a conductor? (a) a wooden stick (b) an iron nail (c) a woollen thread (d) a cotton thread
  2. 2.Which of these is a conductor? (a) a plastic straw (b) a steel spoon (c) a paper strip (d) a rubber band
  3. 3.True or false: a steel spoon is a conductor. (a) True (b) False
  4. 4.🔌 Most metals are good … (a) conductors (b) magnets only (c) insulators (d) batteries
  5. 5.🔦 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
  6. 6.🔍 Which is the odd one out? (a) a cotton thread (b) a steel coin (c) a dry cork (d) a ceramic cup
  7. 7.🔍 Which is the odd one out? (a) a steel coin (b) a metal paper clip (c) a woollen thread (d) a safety pin
  8. 8.🔌 Is a rubber eraser a conductor or an insulator? (a) a conductor (b) an insulator
  9. 9.Which of these is an insulator? (a) an iron nail (b) a glass marble (c) aluminium foil (d) a brass key
  10. 10.🔦 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
  11. 11.🔌 Is a graphite rod a conductor or an insulator? (a) a conductor (b) an insulator
  12. 12.True or false: a steel coin is a conductor. (a) False (b) True
  13. 13.Which of these is a conductor? (a) a glass marble (b) a plastic ruler (c) a steel coin (d) a plastic straw
  14. 14.True or false: a metal paper clip is a conductor. (a) True (b) False
  15. 15.🔦 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
  16. 16.True or false: a glass marble is a conductor. (a) False (b) True
  17. 17.🔍 Which is the odd one out? (a) a wooden stick (b) a copper wire (c) a rubber band (d) a dry cork
  18. 18.Which of these is an insulator? (a) a steel coin (b) aluminium foil (c) an iron nail (d) a paper strip
  19. 19.True or false: a cotton thread is a conductor. (a) False (b) True
  20. 20.🔌 Why are electric wires covered in plastic? (a) plastic is a conductor (b) to make them heavy (c) plastic makes current (d) plastic is an insulator
  21. 21.🔍 Which is the odd one out? (a) a brass key (b) a steel coin (c) a metal paper clip (d) a ceramic cup
  22. 22.🔍 Which is the odd one out? (a) a paper strip (b) a metal paper clip (c) a cotton thread (d) a woollen thread
  23. 23.True or false: a graphite rod is a conductor. (a) True (b) False
  24. 24.🔌 A gap of dry air between two wires acts as … (a) a conductor (b) a switch that is ON (c) a cell (d) 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 eraser across the gap. Does the bulb glow? (a) Yes (b) No
  26. 26.Which of these is a conductor? (a) a rubber eraser (b) a wooden stick (c) a plastic straw (d) a metal paper clip
  27. 27.🔍 Which is the odd one out? (a) a safety pin (b) a plastic straw (c) a brass key (d) aluminium foil
  28. 28.🔌 Is an iron nail a conductor or an insulator? (a) a conductor (b) an insulator
  29. 29.Which of these is an insulator? (a) a graphite rod (b) a steel spoon (c) a safety pin (d) a rubber eraser
  30. 30.🔌 Is a glass marble a conductor or an insulator? (a) an insulator (b) a conductor
  31. 31.True or false: a steel spoon is an insulator. (a) True (b) False
  32. 32.🔌 Is a metal paper clip a conductor or an insulator? (a) an insulator (b) a conductor
  33. 33.Which of these is a conductor? (a) a safety pin (b) a cotton thread (c) a woollen thread (d) a glass marble
  34. 34.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
  35. 35.True or false: a steel coin is an insulator. (a) False (b) True
  36. 36.🔍 Which is the odd one out? (a) a glass marble (b) a rubber eraser (c) a safety pin (d) a plastic straw
  37. 37.True or false: aluminium foil is an insulator. (a) True (b) False
  38. 38.Which of these is an insulator? (a) a rubber band (b) an iron nail (c) a steel spoon (d) a graphite rod
  39. 39.🔌 Is a steel spoon a conductor or an insulator? (a) an insulator (b) a conductor
  40. 40.True or false: a wooden stick is a conductor. (a) False (b) True

Answer key

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

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