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Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 330 · 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.

NameDateTime takenScore ___ / 40
  1. 1.True or false: an electric kettle mainly gives out heat. (a) False (b) True
  2. 2.True or false: a glass marble is an insulator. (a) False (b) True
  3. 3.True or false: to throw cells in a fire is safe. (a) False (b) True
  4. 4.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
  5. 5.🔋 What is a battery? (a) two or more cells joined (b) a switch with a lid (c) a kind of bulb (d) one single wire
  6. 6.💡 In a series circuit, how many paths does the current have? (a) none (b) one for each bulb (c) one (d) two
  7. 7.🔌 Is a steel spoon a conductor or an insulator? (a) a conductor (b) an insulator
  8. 8.True or false: a copper wire is a conductor. (a) True (b) False
  9. 9.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) when either is ON (b) only when both are OFF (c) never (d) only when both are ON
  10. 10.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) battery (b) motor (c) diode (d) voltmeter
  11. 11.🔍 Which is the odd one out? (a) a plastic ruler (b) a woollen thread (c) a copper wire (d) a rubber eraser
  12. 12.🔋 6 identical 1.2 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
  13. 13.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) by Wi-Fi (b) not joined (c) in parallel (d) in series
  14. 14.Which of these is a conductor? (a) a woollen thread (b) a copper wire (c) a plastic straw (d) a glass marble
  15. 15.🔘 Which kind of switch closes when tipped over? (a) a push button (b) a slide switch (c) a tilt switch (d) a toggle switch
  16. 16.🔋 Identical cells side by side (in parallel) give … (a) the same voltage (b) double the voltage (c) no voltage (d) half the voltage
  17. 17.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) to make it colourful (c) quick and clear for all (d) to hide the circuit
  18. 18.🔋 Does a mobile phone give electricity or use electricity? (a) uses electricity (b) gives electricity
  19. 19.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) False (b) True
  20. 20.True or false: a circle with an X in it is the symbol for a bulb. (a) True (b) False
  21. 21.🔋 What should you do with used-up cells? (a) throw them in a fire (b) bury them in soil (c) give them for recycling (d) cut them open
  22. 22.🔦 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 rubber eraser. Does the bulb glow? (a) No (b) Yes
  23. 23.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
  24. 24.🔍 Which is the odd one out? (a) a doorbell (b) a buzzer (c) an electric drill (d) a siren
  25. 25.True or false: a plastic straw is a conductor. (a) False (b) True
  26. 26.Which of these mainly gives out light? (a) a toaster (b) a rice cooker (c) a ceiling fan (d) a night lamp
  27. 27.True or false: on a cell, “usually the black wire” means the − (negative) end. (a) False (b) True
  28. 28.⚠️ Is it safe to build with an adult near? (a) safe (b) not safe
  29. 29.Which of these is true of a parallel circuit? (a) a single current path (b) own switch for each bulb (c) one bulb out, all go out (d) a break stops every bulb
  30. 30.True or false: a water heater mainly gives out light. (a) False (b) True
  31. 31.🔋 2 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  32. 32.🔍 Which is the odd one out? (a) keep drinks far away (b) open a phone charger (c) stop if a part gets hot (d) use small battery cells
  33. 33.🔦 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) Yes (b) No
  34. 34.True or false: “bulbs share the voltage” is true of a series circuit. (a) True (b) False
  35. 35.Which of these mainly makes movement? (a) an electric drill (b) a doorbell (c) an electric iron (d) an LED lamp
  36. 36.⚡ Which tiny particles drift along a metal wire to carry the current? (a) photons (b) water drops (c) electrons (d) dust particles
  37. 37.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
  38. 38.True or false: to fly kites in open fields is safe. (a) False (b) True
  39. 39.🔌 Which part of a screwdriver should an electrician hold? (a) the steel shaft (b) the bare end (c) the plastic handle (d) the metal tip
  40. 40.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)

Answer key

  1. True
  2. True
  3. False
  4. a conductor
  5. two or more cells joined
  6. one
  7. a conductor
  8. True
  9. when either is ON
  10. battery
  11. a copper wire
  12. 1.2
  13. in series
  14. a copper wire
  15. a tilt switch
  16. the same voltage
  17. quick and clear for all
  18. uses electricity
  19. True
  20. True
  21. give them for recycling
  22. No
  23. + (positive)
  24. an electric drill
  25. False
  26. a night lamp
  27. True
  28. safe
  29. own switch for each bulb
  30. False
  31. 4
  32. open a phone charger
  33. Yes
  34. True
  35. an electric drill
  36. electrons
  37. False
  38. True
  39. the plastic handle
  40. − (negative)

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