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Electronics Worksheet: Conductors and Insulators

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

Answer key

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

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