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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 61 · 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) a conductor (b) an insulator
  2. 2.Which of these is an insulator? (a) a metal paper clip (b) a steel coin (c) a rubber eraser (d) an iron nail
  3. 3.🔌 Is a cotton thread a conductor or an insulator? (a) an insulator (b) a conductor
  4. 4.Which of these is an insulator? (a) a copper wire (b) a steel coin (c) a glass marble (d) a steel spoon
  5. 5.True or false: a rubber eraser is an insulator. (a) False (b) True
  6. 6.True or false: an iron nail is an insulator. (a) True (b) False
  7. 7.🔍 Which is the odd one out? (a) a steel spoon (b) a woollen thread (c) a graphite rod (d) a steel coin
  8. 8.True or false: a paper strip is an insulator. (a) True (b) False
  9. 9.🔌 Which part of a screwdriver should an electrician hold? (a) the steel shaft (b) the bare end (c) the metal tip (d) the plastic handle
  10. 10.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
  11. 11.Which of these is a conductor? (a) a woollen thread (b) a brass key (c) a plastic ruler (d) a ceramic cup
  12. 12.🔌 A gap of dry air between two wires acts as … (a) a cell (b) an insulator (c) a conductor (d) a switch that is ON
  13. 13.🔌 Is a paper strip a conductor or an insulator? (a) a conductor (b) an insulator
  14. 14.🔍 Which is the odd one out? (a) a dry cork (b) a rubber eraser (c) a graphite rod (d) a cotton thread
  15. 15.Which of these is a conductor? (a) a paper strip (b) a graphite rod (c) a plastic ruler (d) a dry cork
  16. 16.True or false: a rubber band is a conductor. (a) False (b) True
  17. 17.🔦 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
  18. 18.🔌 Is a brass key a conductor or an insulator? (a) an insulator (b) a conductor
  19. 19.🔦 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) Yes (b) No
  20. 20.True or false: a brass key is an insulator. (a) True (b) False
  21. 21.🔍 Which is the odd one out? (a) a rubber band (b) a copper wire (c) a plastic straw (d) a ceramic cup
  22. 22.🔦 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) No (b) Yes
  23. 23.🔌 Is a glass marble a conductor or an insulator? (a) a conductor (b) an insulator
  24. 24.🔌 Is a steel spoon a conductor or an insulator? (a) a conductor (b) an insulator
  25. 25.True or false: a brass key is a conductor. (a) True (b) False
  26. 26.Which of these is an insulator? (a) a steel spoon (b) a paper strip (c) a safety pin (d) a brass key
  27. 27.🔌 Most metals are good … (a) magnets only (b) conductors (c) insulators (d) batteries
  28. 28.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a glass marble across the gap. Does the bulb glow? (a) Yes (b) No
  29. 29.True or false: a steel spoon is an insulator. (a) True (b) False
  30. 30.True or false: a safety pin is a conductor. (a) False (b) True
  31. 31.Which of these is an insulator? (a) a copper wire (b) a plastic ruler (c) a metal paper clip (d) a steel spoon
  32. 32.🔌 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
  33. 33.True or false: a ceramic cup is a conductor. (a) True (b) False
  34. 34.🔍 Which is the odd one out? (a) a ceramic cup (b) a plastic straw (c) a plastic ruler (d) aluminium foil
  35. 35.🔌 Is a steel coin a conductor or an insulator? (a) a conductor (b) an insulator
  36. 36.🔌 Is a ceramic cup a conductor or an insulator? (a) an insulator (b) a conductor
  37. 37.🔌 Is a plastic straw a conductor or an insulator? (a) an insulator (b) a conductor
  38. 38.🔍 Which is the odd one out? (a) a copper wire (b) a brass key (c) a safety pin (d) a cotton thread
  39. 39.True or false: an iron nail is a conductor. (a) False (b) True
  40. 40.🔌 Is an iron nail a conductor or an insulator? (a) an insulator (b) a conductor

Answer key

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

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