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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 51 · 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 aluminium foil across the gap. Does the bulb glow? (a) Yes (b) No
  2. 2.🔌 Is aluminium foil a conductor or an insulator? (a) an insulator (b) a conductor
  3. 3.Which of these is a conductor? (a) a dry cork (b) a wooden stick (c) a brass key (d) a glass marble
  4. 4.🔌 Is a steel coin a conductor or an insulator? (a) an insulator (b) a conductor
  5. 5.🔌 A gap of dry air between two wires acts as … (a) a conductor (b) a cell (c) a switch that is ON (d) an insulator
  6. 6.🔌 Is a rubber band a conductor or an insulator? (a) an insulator (b) a conductor
  7. 7.🔌 Why are electric wires covered in plastic? (a) plastic makes current (b) plastic is an insulator (c) to make them heavy (d) plastic is a conductor
  8. 8.True or false: a steel spoon is an insulator. (a) False (b) True
  9. 9.True or false: a plastic ruler is an insulator. (a) False (b) True
  10. 10.🔌 Is a steel spoon a conductor or an insulator? (a) an insulator (b) a conductor
  11. 11.🔍 Which is the odd one out? (a) a rubber band (b) a copper wire (c) a safety pin (d) a steel spoon
  12. 12.🔌 Is a paper strip a conductor or an insulator? (a) an insulator (b) a conductor
  13. 13.🔌 Most metals are good … (a) batteries (b) conductors (c) magnets only (d) insulators
  14. 14.🔍 Which is the odd one out? (a) a dry cork (b) a rubber band (c) a paper strip (d) a steel spoon
  15. 15.🔌 Which metal is used for most electric wires at home? (a) rubber (b) glass (c) plastic (d) copper
  16. 16.🔌 Which part of a screwdriver should an electrician hold? (a) the steel shaft (b) the plastic handle (c) the metal tip (d) the bare end
  17. 17.Which of these is an insulator? (a) a steel spoon (b) an iron nail (c) a metal paper clip (d) a plastic ruler
  18. 18.🔍 Which is the odd one out? (a) a brass key (b) a dry cork (c) aluminium foil (d) a metal paper clip
  19. 19.True or false: a ceramic cup is a conductor. (a) True (b) False
  20. 20.Which of these is an insulator? (a) a plastic straw (b) a steel coin (c) a metal paper clip (d) a brass key
  21. 21.🔦 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) Yes (b) No
  22. 22.🔦 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) No (b) Yes
  23. 23.🔦 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) No (b) Yes
  24. 24.🔍 Which is the odd one out? (a) a steel spoon (b) an iron nail (c) a paper strip (d) a metal paper clip
  25. 25.🔍 Which is the odd one out? (a) aluminium foil (b) a plastic straw (c) a steel spoon (d) a brass key
  26. 26.🔌 Is a ceramic cup a conductor or an insulator? (a) an insulator (b) a conductor
  27. 27.🔦 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
  28. 28.🔍 Which is the odd one out? (a) a graphite rod (b) a rubber eraser (c) a plastic ruler (d) a rubber band
  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.True or false: aluminium foil is an insulator. (a) True (b) False
  31. 31.🔌 Is a metal paper clip a conductor or an insulator? (a) an insulator (b) a conductor
  32. 32.🔦 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) Yes (b) No
  33. 33.🔍 Which is the odd one out? (a) a safety pin (b) a wooden stick (c) a steel coin (d) aluminium foil
  34. 34.🔌 Is a rubber eraser a conductor or an insulator? (a) an insulator (b) a conductor
  35. 35.🔦 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
  36. 36.Which of these is an insulator? (a) aluminium foil (b) a steel spoon (c) a rubber band (d) a brass key
  37. 37.🔌 Is a woollen thread a conductor or an insulator? (a) a conductor (b) an insulator
  38. 38.True or false: a copper wire is an insulator. (a) False (b) True
  39. 39.Which of these is an insulator? (a) a safety pin (b) a ceramic cup (c) a copper wire (d) a graphite rod
  40. 40.🔌 Is a plastic ruler a conductor or an insulator? (a) a conductor (b) an insulator

Answer key

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

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