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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 109 · 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.🔦 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) No (b) Yes
  2. 2.🔌 Which metal is used for most electric wires at home? (a) plastic (b) rubber (c) glass (d) copper
  3. 3.🔌 Which part of a screwdriver should an electrician hold? (a) the plastic handle (b) the steel shaft (c) the metal tip (d) the bare end
  4. 4.🔌 Is a steel coin a conductor or an insulator? (a) an insulator (b) a conductor
  5. 5.🔌 Most metals are good … (a) batteries (b) insulators (c) magnets only (d) conductors
  6. 6.🔍 Which is the odd one out? (a) a rubber band (b) an iron nail (c) a brass key (d) a graphite rod
  7. 7.🔌 Is a graphite rod a conductor or an insulator? (a) a conductor (b) an insulator
  8. 8.True or false: a copper wire is a conductor. (a) True (b) False
  9. 9.Which of these is an insulator? (a) a metal paper clip (b) a steel spoon (c) a brass key (d) a wooden stick
  10. 10.🔌 Is a metal paper clip a conductor or an insulator? (a) a conductor (b) an insulator
  11. 11.🔌 Is a cotton thread a conductor or an insulator? (a) a conductor (b) an insulator
  12. 12.Which of these is a conductor? (a) a copper wire (b) a wooden stick (c) a cotton thread (d) a plastic ruler
  13. 13.Which of these is a conductor? (a) a glass marble (b) a rubber eraser (c) a steel spoon (d) a plastic ruler
  14. 14.True or false: a cotton thread is an insulator. (a) False (b) True
  15. 15.🔌 Is a rubber band a conductor or an insulator? (a) an insulator (b) a conductor
  16. 16.🔍 Which is the odd one out? (a) a paper strip (b) a graphite rod (c) a safety pin (d) an iron nail
  17. 17.🔍 Which is the odd one out? (a) a metal paper clip (b) an iron nail (c) a woollen thread (d) a graphite rod
  18. 18.🔌 Is a paper strip a conductor or an insulator? (a) a conductor (b) an insulator
  19. 19.🔌 Is a dry cork a conductor or an insulator? (a) a conductor (b) an insulator
  20. 20.🔍 Which is the odd one out? (a) a rubber eraser (b) a rubber band (c) a plastic ruler (d) aluminium foil
  21. 21.🔦 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
  22. 22.🔌 Is aluminium foil a conductor or an insulator? (a) a conductor (b) an insulator
  23. 23.🔍 Which is the odd one out? (a) a steel spoon (b) a brass key (c) a glass marble (d) a safety pin
  24. 24.🔦 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
  25. 25.Which of these is a conductor? (a) a glass marble (b) a plastic straw (c) a safety pin (d) a rubber eraser
  26. 26.🔍 Which is the odd one out? (a) a steel spoon (b) an iron nail (c) a rubber eraser (d) aluminium foil
  27. 27.🔦 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) No (b) Yes
  28. 28.Which of these is an insulator? (a) a safety pin (b) a plastic ruler (c) aluminium foil (d) an iron nail
  29. 29.Which of these is a conductor? (a) a metal paper clip (b) a dry cork (c) a ceramic cup (d) a cotton thread
  30. 30.True or false: a brass key is an insulator. (a) True (b) False
  31. 31.🔌 Is a wooden stick a conductor or an insulator? (a) a conductor (b) an insulator
  32. 32.🔍 Which is the odd one out? (a) a plastic straw (b) a glass marble (c) a graphite rod (d) a ceramic cup
  33. 33.Which of these is a conductor? (a) aluminium foil (b) a ceramic cup (c) a plastic ruler (d) a glass marble
  34. 34.🔦 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) Yes (b) No
  35. 35.🔦 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) No (b) Yes
  36. 36.🔌 Why are electric wires covered in plastic? (a) plastic makes current (b) plastic is an insulator (c) to make them heavy (d) plastic is a conductor
  37. 37.🔍 Which is the odd one out? (a) a metal paper clip (b) an iron nail (c) a plastic straw (d) a brass key
  38. 38.True or false: an iron nail is an insulator. (a) False (b) True
  39. 39.🔦 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
  40. 40.Which of these is an insulator? (a) a dry cork (b) a metal paper clip (c) a copper wire (d) a graphite rod

Answer key

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

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