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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 52 · 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 a paper strip across the gap. Does the bulb glow? (a) Yes (b) No
  2. 2.🔌 Which metal is used for most electric wires at home? (a) glass (b) copper (c) rubber (d) plastic
  3. 3.🔦 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
  4. 4.Which of these is a conductor? (a) a dry cork (b) a steel spoon (c) a ceramic cup (d) a woollen thread
  5. 5.🔍 Which is the odd one out? (a) a dry cork (b) a graphite rod (c) a steel spoon (d) a metal paper clip
  6. 6.Which of these is a conductor? (a) a plastic ruler (b) aluminium foil (c) a woollen thread (d) a rubber band
  7. 7.🔌 Is a metal paper clip a conductor or an insulator? (a) an insulator (b) a conductor
  8. 8.True or false: a copper wire is a conductor. (a) True (b) False
  9. 9.True or false: a steel spoon is a conductor. (a) True (b) False
  10. 10.🔍 Which is the odd one out? (a) a steel spoon (b) aluminium foil (c) a rubber eraser (d) a brass key
  11. 11.🔦 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) No (b) Yes
  12. 12.🔌 Why are electric wires covered in plastic? (a) plastic is an insulator (b) plastic makes current (c) plastic is a conductor (d) to make them heavy
  13. 13.True or false: a brass key is a conductor. (a) True (b) False
  14. 14.🔌 Most metals are good … (a) insulators (b) batteries (c) conductors (d) magnets only
  15. 15.🔌 Is a cotton thread a conductor or an insulator? (a) a conductor (b) an insulator
  16. 16.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
  17. 17.🔍 Which is the odd one out? (a) a metal paper clip (b) a cotton thread (c) a rubber band (d) a wooden stick
  18. 18.🔦 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) Yes (b) No
  19. 19.🔌 Is a rubber band a conductor or an insulator? (a) a conductor (b) an insulator
  20. 20.Which of these is a conductor? (a) a graphite rod (b) a rubber band (c) a woollen thread (d) a dry cork
  21. 21.True or false: a steel coin is an insulator. (a) False (b) True
  22. 22.True or false: an iron nail is an insulator. (a) False (b) True
  23. 23.🔌 Is a plastic ruler a conductor or an insulator? (a) an insulator (b) a conductor
  24. 24.🔍 Which is the odd one out? (a) a plastic ruler (b) aluminium foil (c) a glass marble (d) a rubber band
  25. 25.🔌 Which part of a screwdriver should an electrician hold? (a) the steel shaft (b) the metal tip (c) the bare end (d) the plastic handle
  26. 26.🔌 Is an iron nail a conductor or an insulator? (a) an insulator (b) a conductor
  27. 27.Which of these is a conductor? (a) a wooden stick (b) a plastic straw (c) an iron nail (d) a rubber band
  28. 28.True or false: a paper strip is an insulator. (a) True (b) False
  29. 29.True or false: a dry cork is an insulator. (a) True (b) False
  30. 30.🔌 Is a steel coin a conductor or an insulator? (a) a conductor (b) an insulator
  31. 31.🔌 Is a safety pin a conductor or an insulator? (a) a conductor (b) an insulator
  32. 32.🔌 Is aluminium foil a conductor or an insulator? (a) an insulator (b) a conductor
  33. 33.Which of these is an insulator? (a) a dry cork (b) a safety pin (c) an iron nail (d) a copper wire
  34. 34.🔌 Is a woollen thread a conductor or an insulator? (a) a conductor (b) an insulator
  35. 35.🔌 Is a steel spoon a conductor or an insulator? (a) an insulator (b) a conductor
  36. 36.Which of these is an insulator? (a) a woollen thread (b) a brass key (c) a safety pin (d) a copper wire
  37. 37.🔦 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
  38. 38.🔍 Which is the odd one out? (a) a ceramic cup (b) a steel spoon (c) aluminium foil (d) a metal paper clip
  39. 39.🔌 A gap of dry air between two wires acts as … (a) a switch that is ON (b) a conductor (c) a cell (d) an insulator
  40. 40.🔍 Which is the odd one out? (a) an iron nail (b) a woollen thread (c) aluminium foil (d) a copper wire

Answer key

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

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