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Electronics Worksheet: Conductors and Insulators

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

Answer key

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

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