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Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 935 · 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 flips up or down? (a) a slide switch (b) a reed switch (c) a push button (d) a toggle switch
  2. 2.True or false: to climb an electric pole is not safe. (a) True (b) False
  3. 3.True or false: a slide switch slides side to side. (a) False (b) True
  4. 4.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
  5. 5.🔌 Is a rubber band a conductor or an insulator? (a) a conductor (b) an insulator
  6. 6.💡 5 identical bulbs are joined in series with a 5 V battery (ideal wires). How many volts does each bulb get? =
  7. 7.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) False (b) True
  8. 8.Which of these mainly gives out heat? (a) a school bell (b) a room heater (c) an exhaust fan (d) a loudspeaker
  9. 9.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) by Wi-Fi (b) in series (c) in parallel (d) not joined
  10. 10.Which of these is an insulator? (a) a glass marble (b) a graphite rod (c) an iron nail (d) a brass key
  11. 11.What does a push button do? (a) stays where you flip it (b) slides side to side (c) closes near a magnet (d) springs back when let go
  12. 12.🔍 Which is the odd one out? (a) take cells out after use (b) touch a switch when wet (c) use a cable with cuts (d) throw cells in a fire
  13. 13.True or false: on a cell, “the flat end” means the − (negative) end. (a) True (b) False
  14. 14.⚡ A solar panel changes which kind of energy into electricity? (a) chemical energy (b) wind energy (c) sound energy (d) light energy
  15. 15.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
  16. 16.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
  17. 17.🔋 Does a cell give electricity or use electricity? (a) gives electricity (b) uses electricity
  18. 18.True or false: a circle with A inside is the symbol for a motor. (a) True (b) False
  19. 19.⚠️ Is it safe to dry your hands first? (a) safe (b) not safe
  20. 20.🔗 Series or parallel circuit: “own switch for each bulb”? (a) series (b) parallel
  21. 21.🔦 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
  22. 22.Which of these is an insulator? (a) a wooden stick (b) a metal paper clip (c) a graphite rod (d) an iron nail
  23. 23.Which drawing is the symbol for a capacitor? (a) one tall, one short bar (b) two or more cell symbols (c) a straight line (d) two equal parallel lines
  24. 24.🔋 Does a computer give electricity or use electricity? (a) uses electricity (b) gives electricity
  25. 25.🔋 What is a battery? (a) a kind of bulb (b) two or more cells joined (c) a switch with a lid (d) one single wire
  26. 26.True or false: a line lifted at a gap is the symbol for a diode. (a) False (b) True
  27. 27.💡 4 identical bulbs are joined in series with a 6 V battery (ideal wires). How many volts does each bulb get? =
  28. 28.Which drawing is the symbol for an LED? (a) a line lifted at a gap (b) a circle with A inside (c) triangle against a bar (d) triangle, bar and arrows
  29. 29.⚠️ Is it safe to poke things in a socket? (a) not safe (b) safe
  30. 30.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
  31. 31.🔁 Is the circuit closed or open if the switch is ON? (a) closed (b) open
  32. 32.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
  33. 33.⚠️ Is it safe to keep drinks far away? (a) not safe (b) safe
  34. 34.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) pour water on them (b) pull them by the hand (c) wait and watch (d) shout for an adult
  35. 35.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
  36. 36.Which of these gives us electricity? (a) a washing machine (b) a mobile phone (c) a computer (d) a generator
  37. 37.What does a reed switch do? (a) springs back when let go (b) works only while pressed (c) closes near a magnet (d) flips up or down
  38. 38.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) one bulb out, all go out (c) a break stops every bulb (d) each gets the full volts
  39. 39.🔋 4 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  40. 40.🔁 What must there be for a current to flow? (a) a broken path (b) a complete loop (c) one loose end (d) a plastic gap

Answer key

  1. a toggle switch
  2. True
  3. True
  4. a conductor
  5. an insulator
  6. 1
  7. True
  8. a room heater
  9. in series
  10. a glass marble
  11. springs back when let go
  12. take cells out after use
  13. True
  14. light energy
  15. False
  16. False
  17. gives electricity
  18. False
  19. safe
  20. parallel
  21. No
  22. a wooden stick
  23. two equal parallel lines
  24. uses electricity
  25. two or more cells joined
  26. False
  27. 1.5
  28. triangle, bar and arrows
  29. not safe
  30. + (positive)
  31. closed
  32. False
  33. safe
  34. shout for an adult
  35. − (negative)
  36. a generator
  37. closes near a magnet
  38. each gets the full volts
  39. 6
  40. a complete loop

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