← Conductors and insulators lesson New set →

Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 94 · 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.

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

Answer key

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

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids