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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 100 · 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.True or false: a copper wire is an insulator. (a) True (b) False
  2. 2.🔌 Which metal is used for most electric wires at home? (a) rubber (b) copper (c) glass (d) plastic
  3. 3.🔦 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) No (b) Yes
  4. 4.Which of these is a conductor? (a) a glass marble (b) a safety pin (c) a paper strip (d) a rubber band
  5. 5.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
  6. 6.True or false: a plastic straw is a conductor. (a) False (b) True
  7. 7.Which of these is a conductor? (a) a wooden stick (b) a woollen thread (c) a rubber band (d) an iron nail
  8. 8.🔌 Is a plastic straw a conductor or an insulator? (a) a conductor (b) an insulator
  9. 9.Which of these is a conductor? (a) a ceramic cup (b) a plastic ruler (c) a copper wire (d) a rubber band
  10. 10.🔌 Why are electric wires covered in plastic? (a) plastic makes current (b) plastic is a conductor (c) plastic is an insulator (d) to make them heavy
  11. 11.True or false: a plastic straw is an insulator. (a) False (b) True
  12. 12.🔌 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
  13. 13.🔍 Which is the odd one out? (a) a metal paper clip (b) an iron nail (c) a safety pin (d) a rubber eraser
  14. 14.🔌 Is a plastic ruler a conductor or an insulator? (a) a conductor (b) an insulator
  15. 15.🔌 Most metals are good … (a) insulators (b) magnets only (c) conductors (d) batteries
  16. 16.🔦 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
  17. 17.🔦 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
  18. 18.Which of these is an insulator? (a) a safety pin (b) a metal paper clip (c) aluminium foil (d) a cotton thread
  19. 19.🔌 Is a brass key a conductor or an insulator? (a) a conductor (b) an insulator
  20. 20.🔌 Is a cotton thread a conductor or an insulator? (a) a conductor (b) an insulator
  21. 21.🔍 Which is the odd one out? (a) a graphite rod (b) a brass key (c) a plastic straw (d) a steel spoon
  22. 22.🔦 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) Yes (b) No
  23. 23.True or false: an iron nail is a conductor. (a) False (b) True
  24. 24.🔌 Is a graphite rod a conductor or an insulator? (a) an insulator (b) a conductor
  25. 25.🔍 Which is the odd one out? (a) a rubber band (b) a glass marble (c) a rubber eraser (d) a brass key
  26. 26.Which of these is an insulator? (a) a brass key (b) an iron nail (c) a metal paper clip (d) a glass marble
  27. 27.🔌 Is a dry cork a conductor or an insulator? (a) an insulator (b) a conductor
  28. 28.Which of these is a conductor? (a) a brass key (b) a glass marble (c) a rubber eraser (d) a paper strip
  29. 29.🔍 Which is the odd one out? (a) a copper wire (b) a steel spoon (c) a paper strip (d) a brass key
  30. 30.🔌 Is a steel spoon a conductor or an insulator? (a) an insulator (b) a conductor
  31. 31.True or false: a safety pin is a conductor. (a) False (b) True
  32. 32.Which of these is a conductor? (a) a plastic straw (b) a wooden stick (c) a metal paper clip (d) a cotton thread
  33. 33.🔌 Is a rubber eraser a conductor or an insulator? (a) a conductor (b) an insulator
  34. 34.🔌 Is an iron nail a conductor or an insulator? (a) an insulator (b) a conductor
  35. 35.🔦 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
  36. 36.🔍 Which is the odd one out? (a) a steel coin (b) a rubber band (c) a safety pin (d) a steel spoon
  37. 37.🔌 Is a woollen thread a conductor or an insulator? (a) a conductor (b) an insulator
  38. 38.🔍 Which is the odd one out? (a) a steel spoon (b) an iron nail (c) a steel coin (d) a dry cork
  39. 39.🔍 Which is the odd one out? (a) a copper wire (b) a steel coin (c) a cotton thread (d) a graphite rod
  40. 40.🔍 Which is the odd one out? (a) a steel coin (b) a paper strip (c) a dry cork (d) a ceramic cup

Answer key

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

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