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Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 798 · 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.True or false: an electric drill mainly gives out light. (a) False (b) True
  2. 2.True or false: a push button springs back when let go. (a) True (b) False
  3. 3.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) in series (c) by Wi-Fi (d) not joined
  4. 4.💡 4 identical bulbs are joined in series with a 16 V battery (ideal wires). How many volts does each bulb get? =
  5. 5.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) bulb (b) motor (c) voltmeter (d) wire
  6. 6.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
  7. 7.🔁 What do we call a circuit with a break in it? (a) an open circuit (b) a full circuit (c) a closed circuit (d) a series circuit
  8. 8.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) False (b) True
  9. 9.Which of these is true of a series circuit? (a) used in house wiring (b) bulbs share the voltage (c) one out, the rest glow (d) many paths for current
  10. 10.💡 In a series circuit, how many paths does the current have? (a) one (b) two (c) none (d) one for each bulb
  11. 11.True or false: if a cell is taken out, the circuit is closed and current flows. (a) False (b) True
  12. 12.True or false: if a wire is cut, the circuit is closed and current flows. (a) False (b) True
  13. 13.True or false: a street light mainly gives out heat. (a) True (b) False
  14. 14.🔗 Series or parallel circuit: “a single current path”? (a) series (b) parallel
  15. 15.🔦 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
  16. 16.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is ON and B is OFF. Does the bulb glow? (a) Yes (b) No
  17. 17.True or false: if a wire has come loose, the circuit is closed and current flows. (a) False (b) True
  18. 18.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. A gap in one wire is bridged by a dry cork. Does the bulb glow? (a) Yes (b) No
  19. 19.🔦 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 an iron nail. Does the bulb glow? (a) Yes (b) No
  20. 20.Which of these mainly makes movement? (a) a ceiling fan (b) a traffic signal (c) a street light (d) a toaster
  21. 21.True or false: a table fan mainly gives out light. (a) True (b) False
  22. 22.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
  23. 23.True or false: to use a cable with cuts is not safe. (a) True (b) False
  24. 24.💡 2 identical bulbs are joined in series with a 6 V battery (ideal wires). How many volts does each bulb get? =
  25. 25.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) resistor (b) capacitor (c) battery (d) diode
  26. 26.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) ammeter (b) junction (c) motor (d) battery
  27. 27.🔁 What must there be for a current to flow? (a) a broken path (b) a plastic gap (c) one loose end (d) a complete loop
  28. 28.🔍 Which is the odd one out? (a) a toaster (b) an electric iron (c) a mixer grinder (d) a rice cooker
  29. 29.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
  30. 30.🔋 Does a cell give electricity or use electricity? (a) uses electricity (b) gives electricity
  31. 31.True or false: a circle with an X in it is the symbol for an ammeter. (a) True (b) False
  32. 32.Which of these is a conductor? (a) aluminium foil (b) a glass marble (c) a plastic ruler (d) a cotton thread
  33. 33.🔌 Which metal is used for most electric wires at home? (a) glass (b) plastic (c) copper (d) rubber
  34. 34.🔦 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) Yes (b) No
  35. 35.🔌 A gap of dry air between two wires acts as … (a) an insulator (b) a switch that is ON (c) a conductor (d) a cell
  36. 36.True or false: a toggle switch stays where you flip it. (a) False (b) True
  37. 37.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they keep glowing (c) they get dimmer (d) they all go out
  38. 38.Which of these gives us electricity? (a) an air conditioner (b) a solar panel (c) a water pump (d) a refrigerator
  39. 39.🔘 Which kind of switch works only while pressed? (a) a reed switch (b) a push button (c) a toggle switch (d) a slide switch
  40. 40.🔍 Which is the odd one out? (a) a loudspeaker (b) a traffic signal (c) a street light (d) an LED lamp

Answer key

  1. False
  2. True
  3. in series
  4. 4
  5. motor
  6. True
  7. an open circuit
  8. False
  9. bulbs share the voltage
  10. one
  11. False
  12. False
  13. False
  14. series
  15. Yes
  16. No
  17. False
  18. No
  19. Yes
  20. a ceiling fan
  21. False
  22. False
  23. True
  24. 3
  25. capacitor
  26. battery
  27. a complete loop
  28. a mixer grinder
  29. + (positive)
  30. gives electricity
  31. False
  32. aluminium foil
  33. copper
  34. No
  35. an insulator
  36. True
  37. they keep glowing
  38. a solar panel
  39. a push button
  40. a loudspeaker

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