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Electronics Worksheet: Conductors and Insulators

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

Answer key

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

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