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Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 33 · 40 questions
TalentJR

Remember (Find the topic, use the idea): Find the topic: energy, safety, conductor, closed loop, switches, cells, symbols, series or parallel. Use that lesson’s idea — complete loop, all ON for series, cells add up, one path or many. For sums, write the working and check it again.

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  1. 1.🔌 Is a steel spoon a conductor or an insulator? (a) an insulator (b) a conductor
  2. 2.True or false: if the loop is complete, the circuit is closed and current flows. (a) False (b) True
  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.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
  5. 5.Which of these mainly makes movement? (a) a mixer grinder (b) a water heater (c) an electric kettle (d) a night lamp
  6. 6.Which of these is safe? (a) use mains for a project (b) touch a fallen wire (c) poke things in a socket (d) stop if a part gets hot
  7. 7.🔘 Which kind of switch closes near a magnet? (a) a slide switch (b) a toggle switch (c) a push button (d) a reed switch
  8. 8.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) True (b) False
  9. 9.🔍 Which is the odd one out? (a) a tube light (b) a toaster (c) an LED lamp (d) a torch
  10. 10.True or false: a metal paper clip is a conductor. (a) False (b) True
  11. 11.Which drawing is the symbol for a cell? (a) a long and a short line (b) a dot where wires meet (c) triangle against a bar (d) a circle with V inside
  12. 12.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) both lines (c) the longer line (d) neither line
  13. 13.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
  14. 14.True or false: a toggle switch stays where you flip it. (a) False (b) True
  15. 15.⚡ A fan changes electrical energy mainly into which kind of energy? (a) movement energy (b) sound energy (c) chemical energy (d) light energy
  16. 16.🔍 Which is the odd one out? (a) an electric drill (b) a ceiling fan (c) an exhaust fan (d) a siren
  17. 17.🔘 Two switches are in series. When does the bulb glow? (a) when both are OFF (b) when either is ON (c) never (d) when both are ON
  18. 18.Which of these mainly makes sound? (a) a night lamp (b) a torch (c) an electric kettle (d) a doorbell
  19. 19.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) LED (b) bulb (c) voltmeter (d) capacitor
  20. 20.Which of these is safe? (a) touch a fallen wire (b) stay away from pylons (c) throw cells in a fire (d) use mains for a project
  21. 21.⚡ What does a siren mainly change electricity into? (a) sound (b) heat (c) movement (d) light
  22. 22.⚠️ Is it safe to touch a fallen wire? (a) not safe (b) safe
  23. 23.🔋 5 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
  24. 24.⚠️ Is it safe to build with an adult near? (a) not safe (b) safe
  25. 25.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  26. 26.💡 In a series circuit, how many paths does the current have? (a) none (b) one (c) one for each bulb (d) two
  27. 27.⚡ What does a torch mainly change electricity into? (a) heat (b) movement (c) sound (d) light
  28. 28.Which drawing is the symbol for a voltmeter? (a) many long-short pairs (b) a long and a short line (c) a circle with V inside (d) two or more cell symbols
  29. 29.True or false: a plastic ruler is an insulator. (a) False (b) True
  30. 30.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a graphite rod. Does the bulb glow? (a) Yes (b) No
  31. 31.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a steel spoon. Does the bulb glow? (a) No (b) Yes
  32. 32.🔌 Most metals are good … (a) magnets only (b) insulators (c) batteries (d) conductors
  33. 33.🔍 Which is the odd one out? (a) a tube light (b) a school bell (c) a night lamp (d) a street light
  34. 34.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) light energy (b) sound energy (c) chemical energy (d) movement energy
  35. 35.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
  36. 36.🔍 Which is the odd one out? (a) throw cells in a fire (b) fly kites in open fields (c) dry your hands first (d) stop if a part gets hot
  37. 37.True or false: if all wires are joined, the circuit is closed and current flows. (a) False (b) True
  38. 38.✏️ In a circuit diagram, which part is drawn as a straight line? (a) wire (b) voltmeter (c) diode (d) capacitor
  39. 39.What does a push button do? (a) closes when tipped over (b) works only while pressed (c) stays where you flip it (d) flips up or down
  40. 40.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True

Answer key

  1. a conductor
  2. True
  3. No
  4. False
  5. a mixer grinder
  6. stop if a part gets hot
  7. a reed switch
  8. True
  9. a toaster
  10. True
  11. a long and a short line
  12. the longer line
  13. series
  14. True
  15. movement energy
  16. a siren
  17. when both are ON
  18. a doorbell
  19. LED
  20. stay away from pylons
  21. sound
  22. not safe
  23. 4.5
  24. safe
  25. + (positive)
  26. one
  27. light
  28. a circle with V inside
  29. True
  30. Yes
  31. No
  32. conductors
  33. a school bell
  34. movement energy
  35. True
  36. throw cells in a fire
  37. True
  38. wire
  39. works only while pressed
  40. True

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