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Electronics Worksheet: Conductors and Insulators

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

Answer key

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

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