← Conductors and insulators lesson New set →

Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 37 · 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.🔌 Why are electric wires covered in plastic? (a) plastic is an insulator (b) to make them heavy (c) plastic is a conductor (d) plastic makes current
  2. 2.🔌 A gap of dry air between two wires acts as … (a) a switch that is ON (b) an insulator (c) a cell (d) a conductor
  3. 3.True or false: a rubber eraser is an insulator. (a) True (b) False
  4. 4.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
  5. 5.🔦 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
  6. 6.🔌 Which metal is used for most electric wires at home? (a) plastic (b) glass (c) copper (d) rubber
  7. 7.Which of these is a conductor? (a) a ceramic cup (b) a woollen thread (c) a paper strip (d) a graphite rod
  8. 8.🔍 Which is the odd one out? (a) a rubber band (b) aluminium foil (c) an iron nail (d) a steel coin
  9. 9.🔦 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
  10. 10.True or false: a wooden stick is a conductor. (a) False (b) True
  11. 11.Which of these is an insulator? (a) a metal paper clip (b) a wooden stick (c) a brass key (d) aluminium foil
  12. 12.🔍 Which is the odd one out? (a) a rubber eraser (b) a rubber band (c) a wooden stick (d) a metal paper clip
  13. 13.Which of these is an insulator? (a) a graphite rod (b) a plastic straw (c) a brass key (d) aluminium foil
  14. 14.🔌 Is a paper strip a conductor or an insulator? (a) a conductor (b) an insulator
  15. 15.🔦 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
  16. 16.Which of these is a conductor? (a) a copper wire (b) a wooden stick (c) a plastic ruler (d) a rubber band
  17. 17.🔦 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
  18. 18.🔍 Which is the odd one out? (a) a cotton thread (b) a paper strip (c) a plastic straw (d) a steel spoon
  19. 19.🔌 Most metals are good … (a) conductors (b) insulators (c) magnets only (d) batteries
  20. 20.True or false: a ceramic cup is an insulator. (a) False (b) True
  21. 21.Which of these is an insulator? (a) aluminium foil (b) a woollen thread (c) a copper wire (d) a metal paper clip
  22. 22.True or false: a copper wire is a conductor. (a) True (b) False
  23. 23.🔌 Is a dry cork a conductor or an insulator? (a) an insulator (b) a conductor
  24. 24.Which of these is a conductor? (a) a rubber band (b) a metal paper clip (c) a woollen thread (d) a glass marble
  25. 25.Which of these is a conductor? (a) a rubber eraser (b) a steel coin (c) a woollen thread (d) a cotton thread
  26. 26.True or false: a ceramic cup is a conductor. (a) False (b) True
  27. 27.True or false: a plastic ruler is a conductor. (a) True (b) False
  28. 28.🔦 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
  29. 29.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
  30. 30.🔍 Which is the odd one out? (a) a steel spoon (b) a metal paper clip (c) a dry cork (d) a brass key
  31. 31.True or false: a cotton thread is an insulator. (a) True (b) False
  32. 32.🔍 Which is the odd one out? (a) an iron nail (b) a graphite rod (c) a plastic ruler (d) a brass key
  33. 33.🔌 Which part of a screwdriver should an electrician hold? (a) the bare end (b) the steel shaft (c) the metal tip (d) the plastic handle
  34. 34.True or false: a copper wire is an insulator. (a) True (b) False
  35. 35.Which of these is a conductor? (a) a woollen thread (b) a dry cork (c) a plastic straw (d) aluminium foil
  36. 36.True or false: a dry cork is a conductor. (a) False (b) True
  37. 37.True or false: a steel coin is an insulator. (a) True (b) False
  38. 38.Which of these is a conductor? (a) a rubber band (b) a wooden stick (c) a dry cork (d) an iron nail
  39. 39.🔌 Is an iron nail a conductor or an insulator? (a) a conductor (b) an insulator
  40. 40.Which of these is an insulator? (a) an iron nail (b) a brass key (c) a plastic ruler (d) a graphite rod

Answer key

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

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