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Electronics Worksheet: Conductors and Insulators

Electronics lesson 3: Conductors and insulators · Set 81 · 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 brass key (b) a rubber eraser (c) a safety pin (d) a graphite rod
  2. 2.🔌 Is a steel coin a conductor or an insulator? (a) a conductor (b) an insulator
  3. 3.🔦 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) No (b) Yes
  4. 4.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
  5. 5.🔦 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
  6. 6.🔌 Is a rubber band a conductor or an insulator? (a) a conductor (b) an insulator
  7. 7.🔌 Is a wooden stick a conductor or an insulator? (a) a conductor (b) an insulator
  8. 8.🔌 Why are electric wires covered in plastic? (a) plastic is a conductor (b) plastic makes current (c) to make them heavy (d) plastic is an insulator
  9. 9.🔌 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
  10. 10.Which of these is a conductor? (a) a metal paper clip (b) a dry cork (c) a paper strip (d) a rubber eraser
  11. 11.True or false: a cotton thread is an insulator. (a) False (b) True
  12. 12.True or false: a woollen thread is a conductor. (a) True (b) False
  13. 13.Which of these is a conductor? (a) a graphite rod (b) a glass marble (c) a dry cork (d) a paper strip
  14. 14.🔌 Most metals are good … (a) magnets only (b) conductors (c) insulators (d) batteries
  15. 15.Which of these is an insulator? (a) an iron nail (b) a brass key (c) a woollen thread (d) a copper wire
  16. 16.🔦 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) Yes (b) No
  17. 17.Which of these is a conductor? (a) a plastic ruler (b) a copper wire (c) a ceramic cup (d) a glass marble
  18. 18.Which of these is an insulator? (a) a steel spoon (b) a ceramic cup (c) a metal paper clip (d) a copper wire
  19. 19.True or false: a glass marble is a conductor. (a) False (b) True
  20. 20.Which of these is a conductor? (a) a plastic straw (b) a ceramic cup (c) a brass key (d) a cotton thread
  21. 21.Which of these is a conductor? (a) a dry cork (b) a ceramic cup (c) a wooden stick (d) an iron nail
  22. 22.🔦 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) Yes (b) No
  23. 23.🔍 Which is the odd one out? (a) a rubber band (b) a wooden stick (c) a safety pin (d) a plastic ruler
  24. 24.🔦 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
  25. 25.🔌 Is a paper strip a conductor or an insulator? (a) an insulator (b) a conductor
  26. 26.🔍 Which is the odd one out? (a) a dry cork (b) a glass marble (c) a ceramic cup (d) aluminium foil
  27. 27.🔌 Which part of a screwdriver should an electrician hold? (a) the plastic handle (b) the steel shaft (c) the bare end (d) the metal tip
  28. 28.🔌 Is a dry cork a conductor or an insulator? (a) an insulator (b) a conductor
  29. 29.Which of these is a conductor? (a) a dry cork (b) a rubber eraser (c) a safety pin (d) a woollen thread
  30. 30.🔍 Which is the odd one out? (a) aluminium foil (b) a brass key (c) a steel spoon (d) a paper strip
  31. 31.Which of these is an insulator? (a) an iron nail (b) aluminium foil (c) a steel coin (d) a dry cork
  32. 32.🔌 Is an iron nail a conductor or an insulator? (a) an insulator (b) a conductor
  33. 33.🔦 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
  34. 34.🔦 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
  35. 35.🔍 Which is the odd one out? (a) a ceramic cup (b) a graphite rod (c) a rubber eraser (d) a woollen thread
  36. 36.🔦 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
  37. 37.Which of these is a conductor? (a) a plastic straw (b) a steel spoon (c) a paper strip (d) a ceramic cup
  38. 38.Which of these is an insulator? (a) a steel spoon (b) a safety pin (c) a steel coin (d) a wooden stick
  39. 39.Which of these is an insulator? (a) aluminium foil (b) a safety pin (c) a copper wire (d) a rubber eraser
  40. 40.🔦 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

Answer key

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

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