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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 93 · 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.

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

Answer key

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

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