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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 42 · 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 paper strip a conductor or an insulator? (a) a conductor (b) an insulator
  2. 2.🔍 Which is the odd one out? (a) a wooden stick (b) an iron nail (c) a copper wire (d) aluminium foil
  3. 3.🔌 Which part of a screwdriver should an electrician hold? (a) the plastic handle (b) the metal tip (c) the bare end (d) the steel shaft
  4. 4.🔌 Why are electric wires covered in plastic? (a) to make them heavy (b) plastic is a conductor (c) plastic is an insulator (d) plastic makes current
  5. 5.Which of these is an insulator? (a) a safety pin (b) a metal paper clip (c) a rubber band (d) aluminium foil
  6. 6.🔍 Which is the odd one out? (a) a ceramic cup (b) a woollen thread (c) a rubber eraser (d) a steel spoon
  7. 7.True or false: a woollen thread is an insulator. (a) True (b) False
  8. 8.🔌 Is a brass key a conductor or an insulator? (a) a conductor (b) an insulator
  9. 9.🔍 Which is the odd one out? (a) a brass key (b) a graphite rod (c) a steel coin (d) a glass marble
  10. 10.True or false: a wooden stick is an insulator. (a) False (b) True
  11. 11.🔍 Which is the odd one out? (a) a safety pin (b) a plastic ruler (c) a paper strip (d) a rubber eraser
  12. 12.🔦 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) Yes (b) No
  13. 13.Which of these is a conductor? (a) a ceramic cup (b) a safety pin (c) a plastic straw (d) a dry cork
  14. 14.Which of these is an insulator? (a) aluminium foil (b) a copper wire (c) a dry cork (d) a brass key
  15. 15.🔍 Which is the odd one out? (a) a plastic ruler (b) a graphite rod (c) a dry cork (d) a rubber band
  16. 16.Which of these is an insulator? (a) a safety pin (b) a copper wire (c) a rubber eraser (d) an iron nail
  17. 17.True or false: a rubber band is an insulator. (a) False (b) True
  18. 18.🔦 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
  19. 19.🔍 Which is the odd one out? (a) an iron nail (b) a copper wire (c) a graphite rod (d) a rubber eraser
  20. 20.🔌 Which metal is used for most electric wires at home? (a) glass (b) rubber (c) plastic (d) copper
  21. 21.🔦 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
  22. 22.🔌 Most metals are good … (a) magnets only (b) batteries (c) insulators (d) conductors
  23. 23.🔍 Which is the odd one out? (a) a plastic ruler (b) a cotton thread (c) a copper wire (d) a glass marble
  24. 24.🔌 Is a dry cork a conductor or an insulator? (a) a conductor (b) an insulator
  25. 25.🔌 Is a steel spoon a conductor or an insulator? (a) a conductor (b) an insulator
  26. 26.True or false: a rubber band is a conductor. (a) False (b) True
  27. 27.Which of these is a conductor? (a) a woollen thread (b) a paper strip (c) a wooden stick (d) a copper wire
  28. 28.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
  29. 29.🔌 A gap of dry air between two wires acts as … (a) a switch that is ON (b) a conductor (c) a cell (d) an insulator
  30. 30.🔌 Is a metal paper clip a conductor or an insulator? (a) a conductor (b) an insulator
  31. 31.🔍 Which is the odd one out? (a) a steel coin (b) a plastic straw (c) a metal paper clip (d) an iron nail
  32. 32.🔍 Which is the odd one out? (a) a glass marble (b) a woollen thread (c) an iron nail (d) a cotton thread
  33. 33.🔌 Is a plastic ruler a conductor or an insulator? (a) an insulator (b) a conductor
  34. 34.Which of these is an insulator? (a) a plastic ruler (b) aluminium foil (c) a steel spoon (d) a safety pin
  35. 35.🔦 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
  36. 36.🔍 Which is the odd one out? (a) a brass key (b) a plastic ruler (c) an iron nail (d) a steel coin
  37. 37.🔦 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
  38. 38.🔦 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
  39. 39.True or false: an iron nail is a conductor. (a) False (b) True
  40. 40.True or false: a glass marble is a conductor. (a) True (b) False

Answer key

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

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