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Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 697 · 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.🔘 Which kind of switch slides side to side? (a) a tilt switch (b) a toggle switch (c) a slide switch (d) a push button
  2. 2.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the glass (b) the filament (c) the base (d) the switch
  3. 3.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) No (b) Yes
  4. 4.🔍 Which is the odd one out? (a) a safety pin (b) a brass key (c) a steel spoon (d) a rubber eraser
  5. 5.True or false: a night lamp mainly gives out light. (a) False (b) True
  6. 6.Which of these is not safe? (a) use small battery cells (b) build with an adult near (c) poke things in a socket (d) stop if a part gets hot
  7. 7.Which of these is an insulator? (a) a copper wire (b) a graphite rod (c) aluminium foil (d) a glass marble
  8. 8.Which of these uses electricity? (a) a bicycle dynamo (b) an air conditioner (c) a power station (d) a cell
  9. 9.🔘 Which kind of switch springs back when let go? (a) a toggle switch (b) a slide switch (c) a tilt switch (d) a push button
  10. 10.🔦 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
  11. 11.🔍 Which is the odd one out? (a) a wooden stick (b) a steel spoon (c) a safety pin (d) aluminium foil
  12. 12.⚠️ Is it safe to stop if a part gets hot? (a) not safe (b) safe
  13. 13.True or false: many long-short pairs is the symbol for a battery. (a) True (b) False
  14. 14.True or false: to build with an adult near is not safe. (a) False (b) True
  15. 15.True or false: aluminium foil is a conductor. (a) False (b) True
  16. 16.Which of these is a conductor? (a) a rubber band (b) a woollen thread (c) a plastic ruler (d) aluminium foil
  17. 17.🔋 How many 3 V cells must be joined in series to give 12 V?
  18. 18.True or false: a push button works only while pressed. (a) False (b) True
  19. 19.🔘 A cell and a bulb are joined to 2 side-by-side paths with one switch on each path — A and B (parallel). A is ON and B is ON. Does the bulb glow? (a) No (b) Yes
  20. 20.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) No (b) Yes
  21. 21.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
  22. 22.🔁 What must there be for a current to flow? (a) a plastic gap (b) one loose end (c) a complete loop (d) a broken path
  23. 23.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
  24. 24.True or false: “a single current path” is true of a series circuit. (a) False (b) True
  25. 25.🔍 Which is the odd one out? (a) a ceiling fan (b) an electric toy car (c) an exhaust fan (d) a water heater
  26. 26.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. Does the bulb glow? (a) Yes (b) No
  27. 27.💡 3 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulb 3 is taken out of its holder. Does bulb 2 glow? (a) No (b) Yes
  28. 28.Which drawing is the symbol for an ammeter? (a) triangle against a bar (b) a long and a short line (c) a circle with a cross (d) a circle with A inside
  29. 29.⚡ What does a tube light mainly change electricity into? (a) movement (b) sound (c) heat (d) light
  30. 30.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  31. 31.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
  32. 32.Which of these is true of a parallel circuit? (a) a single current path (b) a break stops every bulb (c) many paths for current (d) bulbs share the voltage
  33. 33.Which of these is an insulator? (a) a safety pin (b) a wooden stick (c) a metal paper clip (d) a copper wire
  34. 34.True or false: a tilt switch closes when tipped over. (a) False (b) True
  35. 35.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
  36. 36.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
  37. 37.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
  38. 38.⚠️ Is it safe to dry your hands first? (a) safe (b) not safe
  39. 39.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is ON, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes
  40. 40.🔋 6 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)? =

Answer key

  1. a slide switch
  2. the filament
  3. Yes
  4. a rubber eraser
  5. True
  6. poke things in a socket
  7. a glass marble
  8. an air conditioner
  9. a push button
  10. No
  11. a wooden stick
  12. safe
  13. True
  14. False
  15. True
  16. aluminium foil
  17. 4
  18. True
  19. Yes
  20. No
  21. − (negative)
  22. a complete loop
  23. True
  24. True
  25. a water heater
  26. No
  27. Yes
  28. a circle with A inside
  29. light
  30. + (positive)
  31. a conductor
  32. many paths for current
  33. a wooden stick
  34. True
  35. False
  36. False
  37. True
  38. safe
  39. Yes
  40. 6

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