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Electronics Worksheet: Conductors and Insulators

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

Answer key

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

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