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Electronics Worksheet: Conductors and Insulators

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

Answer key

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

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