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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 46 · 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.🔌 Is a plastic ruler a conductor or an insulator? (a) an insulator (b) a conductor
  2. 2.🔍 Which is the odd one out? (a) a steel coin (b) a brass key (c) a glass marble (d) a steel spoon
  3. 3.🔌 Is a woollen thread a conductor or an insulator? (a) a conductor (b) an insulator
  4. 4.🔍 Which is the odd one out? (a) a woollen thread (b) a glass marble (c) a graphite rod (d) a rubber eraser
  5. 5.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a rubber band across the gap. Does the bulb glow? (a) No (b) Yes
  6. 6.Which of these is an insulator? (a) a ceramic cup (b) a copper wire (c) a graphite rod (d) an iron nail
  7. 7.True or false: a rubber eraser is an insulator. (a) True (b) False
  8. 8.🔌 Is a dry cork a conductor or an insulator? (a) a conductor (b) an insulator
  9. 9.🔦 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
  10. 10.Which of these is a conductor? (a) a plastic straw (b) a plastic ruler (c) a cotton thread (d) a graphite rod
  11. 11.🔌 Which metal is used for most electric wires at home? (a) copper (b) plastic (c) glass (d) rubber
  12. 12.Which of these is a conductor? (a) a rubber band (b) a rubber eraser (c) a wooden stick (d) a copper wire
  13. 13.Which of these is a conductor? (a) a woollen thread (b) a steel spoon (c) a rubber band (d) a plastic straw
  14. 14.🔦 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) No (b) Yes
  15. 15.🔍 Which is the odd one out? (a) a copper wire (b) a rubber band (c) a paper strip (d) a rubber eraser
  16. 16.🔌 Is aluminium foil a conductor or an insulator? (a) an insulator (b) a conductor
  17. 17.Which of these is a conductor? (a) a plastic ruler (b) a glass marble (c) a paper strip (d) aluminium foil
  18. 18.🔌 Is a wooden stick a conductor or an insulator? (a) a conductor (b) an insulator
  19. 19.🔍 Which is the odd one out? (a) a steel coin (b) a brass key (c) a graphite rod (d) a ceramic cup
  20. 20.Which of these is a conductor? (a) a plastic ruler (b) a rubber eraser (c) a dry cork (d) a brass key
  21. 21.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a cotton thread across the gap. Does the bulb glow? (a) No (b) Yes
  22. 22.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a ceramic cup across the gap. Does the bulb glow? (a) Yes (b) No
  23. 23.Which of these is a conductor? (a) a rubber eraser (b) a steel coin (c) a dry cork (d) a glass marble
  24. 24.True or false: a steel coin is a conductor. (a) False (b) True
  25. 25.True or false: a plastic straw is a conductor. (a) True (b) False
  26. 26.🔌 Is a rubber band a conductor or an insulator? (a) a conductor (b) an insulator
  27. 27.🔌 Most metals are good … (a) insulators (b) conductors (c) magnets only (d) batteries
  28. 28.Which of these is an insulator? (a) a safety pin (b) a steel spoon (c) a metal paper clip (d) a plastic ruler
  29. 29.True or false: a metal paper clip is an insulator. (a) True (b) False
  30. 30.True or false: a wooden stick is a conductor. (a) True (b) False
  31. 31.True or false: a rubber band is an insulator. (a) True (b) False
  32. 32.🔦 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
  33. 33.🔌 Is a graphite rod a conductor or an insulator? (a) a conductor (b) an insulator
  34. 34.🔍 Which is the odd one out? (a) a safety pin (b) a paper strip (c) a steel coin (d) a steel spoon
  35. 35.🔌 Is a safety pin a conductor or an insulator? (a) a conductor (b) an insulator
  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.🔦 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
  38. 38.True or false: a woollen thread is a conductor. (a) True (b) False
  39. 39.🔌 Which part of a screwdriver should an electrician hold? (a) the steel shaft (b) the plastic handle (c) the metal tip (d) the bare end
  40. 40.🔍 Which is the odd one out? (a) a brass key (b) a woollen thread (c) a rubber eraser (d) a wooden stick

Answer key

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

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