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Electronics Worksheet: Conductors and Insulators

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

Answer key

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

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