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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 55 · 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.Which of these is a conductor? (a) a rubber band (b) a safety pin (c) a glass marble (d) a rubber eraser
  2. 2.🔌 Is a paper strip a conductor or an insulator? (a) an insulator (b) a conductor
  3. 3.🔌 A gap of dry air between two wires acts as … (a) a cell (b) an insulator (c) a conductor (d) a switch that is ON
  4. 4.Which of these is an insulator? (a) a steel spoon (b) a wooden stick (c) aluminium foil (d) a graphite rod
  5. 5.🔍 Which is the odd one out? (a) a plastic ruler (b) a copper wire (c) a metal paper clip (d) a graphite rod
  6. 6.🔌 Is a graphite rod a conductor or an insulator? (a) an insulator (b) a conductor
  7. 7.🔍 Which is the odd one out? (a) a plastic ruler (b) a graphite rod (c) a plastic straw (d) a cotton thread
  8. 8.True or false: a glass marble is a conductor. (a) True (b) False
  9. 9.Which of these is a conductor? (a) a glass marble (b) a woollen thread (c) a brass key (d) a paper strip
  10. 10.🔦 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) No (b) Yes
  11. 11.🔦 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
  12. 12.🔌 Is a plastic ruler a conductor or an insulator? (a) a conductor (b) an insulator
  13. 13.True or false: a steel spoon is a conductor. (a) True (b) False
  14. 14.True or false: an iron nail is a conductor. (a) False (b) True
  15. 15.🔌 Is a ceramic cup a conductor or an insulator? (a) an insulator (b) a conductor
  16. 16.True or false: a plastic straw is a conductor. (a) True (b) False
  17. 17.🔦 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
  18. 18.🔌 Which metal is used for most electric wires at home? (a) plastic (b) rubber (c) glass (d) copper
  19. 19.🔌 Is a plastic straw a conductor or an insulator? (a) an insulator (b) a conductor
  20. 20.🔌 Is a copper wire a conductor or an insulator? (a) a conductor (b) an insulator
  21. 21.True or false: a cotton thread is a conductor. (a) True (b) False
  22. 22.Which of these is an insulator? (a) a graphite rod (b) a steel coin (c) a rubber eraser (d) an iron nail
  23. 23.True or false: a rubber eraser is an insulator. (a) True (b) False
  24. 24.True or false: a woollen thread is a conductor. (a) False (b) True
  25. 25.🔦 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
  26. 26.🔌 Is a glass marble a conductor or an insulator? (a) a conductor (b) an insulator
  27. 27.🔍 Which is the odd one out? (a) a brass key (b) a steel spoon (c) aluminium foil (d) a dry cork
  28. 28.Which of these is an insulator? (a) an iron nail (b) a steel spoon (c) a plastic straw (d) a brass key
  29. 29.Which of these is an insulator? (a) a safety pin (b) a plastic ruler (c) a copper wire (d) a metal paper clip
  30. 30.🔌 Is a woollen thread a conductor or an insulator? (a) an insulator (b) a conductor
  31. 31.🔌 Which part of a screwdriver should an electrician hold? (a) the plastic handle (b) the bare end (c) the steel shaft (d) the metal tip
  32. 32.Which of these is a conductor? (a) a wooden stick (b) a rubber eraser (c) a plastic straw (d) aluminium foil
  33. 33.True or false: a glass marble is an insulator. (a) False (b) True
  34. 34.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a safety pin across the gap. Does the bulb glow? (a) Yes (b) No
  35. 35.🔌 Why are electric wires covered in plastic? (a) to make them heavy (b) plastic is a conductor (c) plastic makes current (d) plastic is an insulator
  36. 36.🔦 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
  37. 37.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
  38. 38.🔌 Is an iron nail a conductor or an insulator? (a) a conductor (b) an insulator
  39. 39.🔌 Is a cotton thread a conductor or an insulator? (a) an insulator (b) a conductor
  40. 40.🔦 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

Answer key

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

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