← Conductors and insulators lesson New set →

Electronics Worksheet: Conductors and Insulators

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

Answer key

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

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