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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 58 · 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.🔦 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) No (b) Yes
  2. 2.Which of these is a conductor? (a) a wooden stick (b) a dry cork (c) a woollen thread (d) a metal paper clip
  3. 3.🔦 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
  4. 4.True or false: a ceramic cup is a conductor. (a) True (b) False
  5. 5.True or false: a graphite rod is an insulator. (a) True (b) False
  6. 6.🔦 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
  7. 7.🔍 Which is the odd one out? (a) a paper strip (b) a rubber eraser (c) a plastic straw (d) a safety pin
  8. 8.🔌 Why are electric wires covered in plastic? (a) plastic is an insulator (b) to make them heavy (c) plastic makes current (d) plastic is a conductor
  9. 9.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
  10. 10.True or false: a woollen thread is an insulator. (a) False (b) True
  11. 11.🔦 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
  12. 12.Which of these is an insulator? (a) a wooden stick (b) a steel spoon (c) a steel coin (d) a metal paper clip
  13. 13.🔌 Is a plastic ruler a conductor or an insulator? (a) a conductor (b) an insulator
  14. 14.🔦 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) No (b) Yes
  15. 15.Which of these is a conductor? (a) a paper strip (b) a plastic straw (c) a graphite rod (d) a rubber eraser
  16. 16.🔦 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) Yes (b) No
  17. 17.Which of these is an insulator? (a) aluminium foil (b) a safety pin (c) a dry cork (d) a steel coin
  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 steel spoon a conductor or an insulator? (a) a conductor (b) an insulator
  20. 20.🔍 Which is the odd one out? (a) a plastic straw (b) a rubber band (c) a wooden stick (d) a graphite rod
  21. 21.🔦 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) No (b) Yes
  22. 22.True or false: aluminium foil is an insulator. (a) True (b) False
  23. 23.Which of these is an insulator? (a) a rubber eraser (b) a graphite rod (c) a safety pin (d) aluminium foil
  24. 24.🔦 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
  25. 25.🔍 Which is the odd one out? (a) a steel spoon (b) a safety pin (c) a ceramic cup (d) an iron nail
  26. 26.🔌 Which part of a screwdriver should an electrician hold? (a) the metal tip (b) the steel shaft (c) the bare end (d) the plastic handle
  27. 27.🔦 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
  28. 28.🔌 Which metal is used for most electric wires at home? (a) plastic (b) glass (c) copper (d) rubber
  29. 29.🔍 Which is the odd one out? (a) a rubber band (b) a wooden stick (c) a metal paper clip (d) a cotton thread
  30. 30.🔦 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
  31. 31.🔌 Is a rubber band a conductor or an insulator? (a) a conductor (b) an insulator
  32. 32.🔌 Most metals are good … (a) batteries (b) insulators (c) magnets only (d) conductors
  33. 33.🔌 Is a paper strip a conductor or an insulator? (a) a conductor (b) an insulator
  34. 34.🔌 Is a plastic straw a conductor or an insulator? (a) an insulator (b) a conductor
  35. 35.🔌 Is a steel coin a conductor or an insulator? (a) a conductor (b) an insulator
  36. 36.🔌 Is aluminium foil a conductor or an insulator? (a) an insulator (b) a conductor
  37. 37.🔌 Is a graphite rod a conductor or an insulator? (a) an insulator (b) a conductor
  38. 38.Which of these is an insulator? (a) an iron nail (b) a steel coin (c) a woollen thread (d) a brass key
  39. 39.🔍 Which is the odd one out? (a) a rubber eraser (b) a rubber band (c) a dry cork (d) an iron nail
  40. 40.Which of these is a conductor? (a) a plastic ruler (b) a rubber band (c) a wooden stick (d) an iron nail

Answer key

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

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