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Electronics Worksheet: Conductors and Insulators

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

Answer key

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

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