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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 65 · 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 an iron nail across the gap. Does the bulb glow? (a) No (b) Yes
  2. 2.True or false: a graphite rod is an insulator. (a) True (b) False
  3. 3.🔍 Which is the odd one out? (a) a ceramic cup (b) a rubber band (c) a paper strip (d) a copper wire
  4. 4.Which of these is an insulator? (a) an iron nail (b) a cotton thread (c) a brass key (d) a steel spoon
  5. 5.True or false: a dry cork is a conductor. (a) True (b) False
  6. 6.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
  7. 7.Which of these is an insulator? (a) a graphite rod (b) a metal paper clip (c) a wooden stick (d) a copper wire
  8. 8.🔍 Which is the odd one out? (a) a safety pin (b) a brass key (c) a copper wire (d) a wooden stick
  9. 9.🔌 Is a cotton thread a conductor or an insulator? (a) an insulator (b) a conductor
  10. 10.True or false: a plastic straw is a conductor. (a) False (b) True
  11. 11.🔦 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
  12. 12.🔌 A gap of dry air between two wires acts as … (a) a cell (b) a conductor (c) a switch that is ON (d) an insulator
  13. 13.True or false: a cotton thread is a conductor. (a) False (b) True
  14. 14.🔌 Which metal is used for most electric wires at home? (a) glass (b) copper (c) plastic (d) rubber
  15. 15.True or false: a glass marble is a conductor. (a) False (b) True
  16. 16.🔍 Which is the odd one out? (a) a graphite rod (b) a glass marble (c) a plastic ruler (d) a rubber band
  17. 17.Which of these is an insulator? (a) a copper wire (b) a safety pin (c) a ceramic cup (d) a steel spoon
  18. 18.🔍 Which is the odd one out? (a) a wooden stick (b) a rubber eraser (c) a glass marble (d) an iron nail
  19. 19.🔌 Is a safety pin a conductor or an insulator? (a) a conductor (b) an insulator
  20. 20.🔍 Which is the odd one out? (a) an iron nail (b) a rubber eraser (c) a graphite rod (d) a steel spoon
  21. 21.Which of these is an insulator? (a) a brass key (b) a steel spoon (c) a paper strip (d) a copper wire
  22. 22.🔍 Which is the odd one out? (a) a steel coin (b) a ceramic cup (c) a paper strip (d) a wooden stick
  23. 23.True or false: a safety pin is an insulator. (a) True (b) False
  24. 24.🔦 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
  25. 25.🔌 Which part of a screwdriver should an electrician hold? (a) the steel shaft (b) the metal tip (c) the plastic handle (d) the bare end
  26. 26.🔌 Is a woollen thread a conductor or an insulator? (a) an insulator (b) a conductor
  27. 27.🔦 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
  28. 28.Which of these is a conductor? (a) a rubber band (b) a plastic ruler (c) a glass marble (d) a safety pin
  29. 29.Which of these is a conductor? (a) a wooden stick (b) a cotton thread (c) a glass marble (d) a steel coin
  30. 30.Which of these is a conductor? (a) a plastic ruler (b) a cotton thread (c) a woollen thread (d) aluminium foil
  31. 31.🔌 Is a steel spoon a conductor or an insulator? (a) a conductor (b) an insulator
  32. 32.🔌 Is aluminium foil a conductor or an insulator? (a) a conductor (b) an insulator
  33. 33.🔌 Most metals are good … (a) conductors (b) insulators (c) batteries (d) magnets only
  34. 34.🔍 Which is the odd one out? (a) aluminium foil (b) a plastic straw (c) a rubber band (d) a paper strip
  35. 35.True or false: a plastic straw is an insulator. (a) False (b) True
  36. 36.True or false: a dry cork is an insulator. (a) True (b) False
  37. 37.True or false: a plastic ruler is a conductor. (a) True (b) False
  38. 38.🔌 Is a wooden stick a conductor or an insulator? (a) a conductor (b) an insulator
  39. 39.Which of these is a conductor? (a) a steel spoon (b) a rubber eraser (c) a plastic straw (d) a paper strip
  40. 40.True or false: a safety pin is a conductor. (a) True (b) False

Answer key

  1. Yes
  2. False
  3. a copper wire
  4. a cotton thread
  5. False
  6. a conductor
  7. a wooden stick
  8. a wooden stick
  9. an insulator
  10. False
  11. Yes
  12. an insulator
  13. False
  14. copper
  15. False
  16. a graphite rod
  17. a ceramic cup
  18. an iron nail
  19. a conductor
  20. a rubber eraser
  21. a paper strip
  22. a steel coin
  23. False
  24. Yes
  25. the plastic handle
  26. an insulator
  27. Yes
  28. a safety pin
  29. a steel coin
  30. aluminium foil
  31. a conductor
  32. a conductor
  33. conductors
  34. aluminium foil
  35. True
  36. True
  37. False
  38. an insulator
  39. a steel spoon
  40. True

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