← Conductors and insulators lesson New set →

Electronics Worksheet: Conductors and Insulators

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

Answer key

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

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