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Electronics Worksheet: Conductors and Insulators

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

Answer key

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

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