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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 48 · 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 a conductor? (a) a plastic ruler (b) a rubber band (c) a rubber eraser (d) an iron nail
  2. 2.🔦 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
  3. 3.🔦 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) No (b) Yes
  4. 4.🔌 Is a cotton thread a conductor or an insulator? (a) a conductor (b) an insulator
  5. 5.🔌 Why are electric wires covered in plastic? (a) plastic is a conductor (b) to make them heavy (c) plastic is an insulator (d) plastic makes current
  6. 6.🔦 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) Yes (b) No
  7. 7.🔌 Most metals are good … (a) insulators (b) batteries (c) conductors (d) magnets only
  8. 8.True or false: a steel coin is a conductor. (a) True (b) False
  9. 9.🔦 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
  10. 10.True or false: a wooden stick is a conductor. (a) True (b) False
  11. 11.Which of these is an insulator? (a) a dry cork (b) aluminium foil (c) a safety pin (d) a brass key
  12. 12.True or false: a wooden stick is an insulator. (a) True (b) False
  13. 13.🔌 Is a woollen thread a conductor or an insulator? (a) an insulator (b) a conductor
  14. 14.🔌 Which part of a screwdriver should an electrician hold? (a) the metal tip (b) the bare end (c) the steel shaft (d) the plastic handle
  15. 15.True or false: a rubber eraser is a conductor. (a) True (b) False
  16. 16.🔦 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) No (b) Yes
  17. 17.Which of these is a conductor? (a) a rubber band (b) a cotton thread (c) a copper wire (d) a plastic straw
  18. 18.🔌 A gap of dry air between two wires acts as … (a) a switch that is ON (b) a cell (c) a conductor (d) an insulator
  19. 19.Which of these is a conductor? (a) a plastic straw (b) a cotton thread (c) aluminium foil (d) a rubber band
  20. 20.🔌 Is a brass key a conductor or an insulator? (a) a conductor (b) an insulator
  21. 21.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a graphite rod across the gap. Does the bulb glow? (a) Yes (b) No
  22. 22.🔍 Which is the odd one out? (a) a plastic ruler (b) a ceramic cup (c) a copper wire (d) a paper strip
  23. 23.Which of these is an insulator? (a) a metal paper clip (b) a steel spoon (c) a copper wire (d) a plastic ruler
  24. 24.🔍 Which is the odd one out? (a) a metal paper clip (b) a steel spoon (c) a dry cork (d) a copper wire
  25. 25.🔌 Is a glass marble a conductor or an insulator? (a) a conductor (b) an insulator
  26. 26.Which of these is a conductor? (a) a dry cork (b) a glass marble (c) a steel spoon (d) a woollen thread
  27. 27.🔦 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) No (b) Yes
  28. 28.🔌 Is a plastic straw a conductor or an insulator? (a) a conductor (b) an insulator
  29. 29.🔌 Is a plastic ruler a conductor or an insulator? (a) an insulator (b) a conductor
  30. 30.🔌 Is a rubber band a conductor or an insulator? (a) an insulator (b) a conductor
  31. 31.🔌 Is a steel spoon a conductor or an insulator? (a) a conductor (b) an insulator
  32. 32.🔌 Which metal is used for most electric wires at home? (a) copper (b) rubber (c) plastic (d) glass
  33. 33.🔌 Is a safety pin a conductor or an insulator? (a) a conductor (b) an insulator
  34. 34.🔍 Which is the odd one out? (a) a steel spoon (b) a wooden stick (c) a rubber eraser (d) a glass marble
  35. 35.🔌 Is a wooden stick a conductor or an insulator? (a) an insulator (b) a conductor
  36. 36.🔍 Which is the odd one out? (a) a cotton thread (b) an iron nail (c) a copper wire (d) aluminium foil
  37. 37.True or false: a plastic ruler is a conductor. (a) False (b) True
  38. 38.True or false: a metal paper clip is an insulator. (a) True (b) False
  39. 39.True or false: a woollen thread is a conductor. (a) False (b) True
  40. 40.True or false: a graphite rod is an insulator. (a) True (b) False

Answer key

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

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