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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 63 · 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 an insulator? (a) a graphite rod (b) a metal paper clip (c) a paper strip (d) a safety pin
  2. 2.Which of these is a conductor? (a) a wooden stick (b) a graphite rod (c) a woollen thread (d) a plastic straw
  3. 3.🔦 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) No (b) Yes
  4. 4.🔌 Is a plastic straw a conductor or an insulator? (a) an insulator (b) a conductor
  5. 5.🔦 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
  6. 6.🔌 Most metals are good … (a) batteries (b) insulators (c) conductors (d) magnets only
  7. 7.Which of these is a conductor? (a) a cotton thread (b) a glass marble (c) a plastic ruler (d) aluminium foil
  8. 8.🔌 Is a cotton thread a conductor or an insulator? (a) an insulator (b) a conductor
  9. 9.🔍 Which is the odd one out? (a) a steel spoon (b) a copper wire (c) a graphite rod (d) a plastic straw
  10. 10.True or false: aluminium foil is an insulator. (a) True (b) False
  11. 11.🔌 Which part of a screwdriver should an electrician hold? (a) the plastic handle (b) the metal tip (c) the steel shaft (d) the bare end
  12. 12.🔌 Is a rubber eraser a conductor or an insulator? (a) an insulator (b) a conductor
  13. 13.🔌 Is a graphite rod a conductor or an insulator? (a) a conductor (b) an insulator
  14. 14.🔍 Which is the odd one out? (a) a ceramic cup (b) an iron nail (c) aluminium foil (d) a safety pin
  15. 15.True or false: aluminium foil is a conductor. (a) False (b) True
  16. 16.🔍 Which is the odd one out? (a) a paper strip (b) a plastic ruler (c) a glass marble (d) an iron nail
  17. 17.🔍 Which is the odd one out? (a) a glass marble (b) a copper wire (c) a steel coin (d) an iron nail
  18. 18.Which of these is a conductor? (a) a woollen thread (b) a wooden stick (c) an iron nail (d) a ceramic cup
  19. 19.True or false: a rubber eraser is an insulator. (a) True (b) False
  20. 20.True or false: a plastic straw is a conductor. (a) True (b) False
  21. 21.🔌 Is a brass key a conductor or an insulator? (a) an insulator (b) a conductor
  22. 22.True or false: a woollen thread is a conductor. (a) True (b) False
  23. 23.🔍 Which is the odd one out? (a) a brass key (b) a glass marble (c) a paper strip (d) a woollen thread
  24. 24.🔌 Is a dry cork a conductor or an insulator? (a) a conductor (b) an insulator
  25. 25.True or false: a metal paper clip is an insulator. (a) True (b) False
  26. 26.🔌 A gap of dry air between two wires acts as … (a) a cell (b) a conductor (c) an insulator (d) a switch that is ON
  27. 27.🔌 Is a glass marble a conductor or an insulator? (a) a conductor (b) an insulator
  28. 28.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic straw across the gap. Does the bulb glow? (a) Yes (b) No
  29. 29.True or false: a dry cork is a conductor. (a) False (b) True
  30. 30.🔍 Which is the odd one out? (a) a steel spoon (b) a rubber band (c) a brass key (d) a copper wire
  31. 31.Which of these is a conductor? (a) a rubber band (b) a dry cork (c) a steel spoon (d) a cotton thread
  32. 32.🔦 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) No (b) Yes
  33. 33.🔌 Is a wooden stick a conductor or an insulator? (a) a conductor (b) an insulator
  34. 34.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel coin across the gap. Does the bulb glow? (a) Yes (b) No
  35. 35.🔌 Is a woollen thread a conductor or an insulator? (a) an insulator (b) a conductor
  36. 36.🔦 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
  37. 37.🔍 Which is the odd one out? (a) a plastic straw (b) aluminium foil (c) a plastic ruler (d) a rubber eraser
  38. 38.Which of these is a conductor? (a) a plastic straw (b) a woollen thread (c) a brass key (d) a cotton thread
  39. 39.Which of these is a conductor? (a) a dry cork (b) a safety pin (c) a glass marble (d) a plastic ruler
  40. 40.True or false: a safety pin is an insulator. (a) True (b) False

Answer key

  1. a paper strip
  2. a graphite rod
  3. No
  4. an insulator
  5. Yes
  6. conductors
  7. aluminium foil
  8. an insulator
  9. a plastic straw
  10. False
  11. the plastic handle
  12. an insulator
  13. a conductor
  14. a ceramic cup
  15. True
  16. an iron nail
  17. a glass marble
  18. an iron nail
  19. True
  20. False
  21. a conductor
  22. False
  23. a brass key
  24. an insulator
  25. False
  26. an insulator
  27. an insulator
  28. No
  29. False
  30. a rubber band
  31. a steel spoon
  32. Yes
  33. an insulator
  34. Yes
  35. an insulator
  36. Yes
  37. aluminium foil
  38. a brass key
  39. a safety pin
  40. False

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