← Conductors and insulators lesson New set →

Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 53 · 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 a conductor (b) to make them heavy (c) plastic is an insulator (d) plastic makes current
  2. 2.True or false: a brass key is a conductor. (a) True (b) False
  3. 3.🔌 A gap of dry air between two wires acts as … (a) a cell (b) a switch that is ON (c) an insulator (d) a conductor
  4. 4.🔌 Most metals are good … (a) magnets only (b) insulators (c) batteries (d) conductors
  5. 5.🔦 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
  6. 6.True or false: a glass marble is a conductor. (a) False (b) True
  7. 7.🔌 Is a woollen thread a conductor or an insulator? (a) an insulator (b) a conductor
  8. 8.🔦 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) No (b) Yes
  9. 9.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a dry cork across the gap. Does the bulb glow? (a) Yes (b) No
  10. 10.🔌 Is a ceramic cup a conductor or an insulator? (a) a conductor (b) an insulator
  11. 11.True or false: a metal paper clip is a conductor. (a) False (b) True
  12. 12.🔦 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
  13. 13.Which of these is a conductor? (a) a metal paper clip (b) a plastic straw (c) a plastic ruler (d) a ceramic cup
  14. 14.Which of these is an insulator? (a) a brass key (b) a cotton thread (c) a steel spoon (d) aluminium foil
  15. 15.🔌 Which part of a screwdriver should an electrician hold? (a) the steel shaft (b) the metal tip (c) the bare end (d) the plastic handle
  16. 16.Which of these is a conductor? (a) a paper strip (b) a rubber band (c) aluminium foil (d) a wooden stick
  17. 17.Which of these is an insulator? (a) a metal paper clip (b) a brass key (c) a rubber eraser (d) a copper wire
  18. 18.🔦 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
  19. 19.🔌 Is a paper strip a conductor or an insulator? (a) an insulator (b) a conductor
  20. 20.🔌 Is a steel spoon a conductor or an insulator? (a) a conductor (b) an insulator
  21. 21.🔌 Is a cotton thread a conductor or an insulator? (a) an insulator (b) a conductor
  22. 22.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
  23. 23.🔍 Which is the odd one out? (a) a copper wire (b) a paper strip (c) an iron nail (d) a brass key
  24. 24.🔌 Is an iron nail a conductor or an insulator? (a) an insulator (b) a conductor
  25. 25.🔌 Which metal is used for most electric wires at home? (a) rubber (b) copper (c) plastic (d) glass
  26. 26.🔌 Is a plastic straw a conductor or an insulator? (a) an insulator (b) a conductor
  27. 27.🔍 Which is the odd one out? (a) a plastic straw (b) a steel coin (c) a safety pin (d) an iron nail
  28. 28.🔍 Which is the odd one out? (a) a cotton thread (b) a copper wire (c) a plastic straw (d) a paper strip
  29. 29.🔌 Is a plastic ruler a conductor or an insulator? (a) a conductor (b) an insulator
  30. 30.🔍 Which is the odd one out? (a) a metal paper clip (b) a copper wire (c) a graphite rod (d) a plastic ruler
  31. 31.Which of these is a conductor? (a) an iron nail (b) a ceramic cup (c) a rubber eraser (d) a plastic straw
  32. 32.True or false: a wooden stick is a conductor. (a) True (b) False
  33. 33.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a woollen thread (d) a rubber eraser
  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) Yes (b) No
  35. 35.Which of these is a conductor? (a) a copper wire (b) a glass marble (c) a woollen thread (d) a rubber band
  36. 36.🔌 Is a wooden stick a conductor or an insulator? (a) a conductor (b) an insulator
  37. 37.🔌 Is a rubber band a conductor or an insulator? (a) an insulator (b) a conductor
  38. 38.🔌 Is a brass key a conductor or an insulator? (a) a conductor (b) an insulator
  39. 39.Which of these is a conductor? (a) a plastic straw (b) a ceramic cup (c) a rubber band (d) a brass key
  40. 40.🔍 Which is the odd one out? (a) a metal paper clip (b) a copper wire (c) a graphite rod (d) a cotton thread

Answer key

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

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