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Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 916 · 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.🔘 When a switch is ON, the circuit is … (a) cut (b) open (c) broken (d) closed
  2. 2.🔘 Which kind of switch stays where you flip it? (a) a tilt switch (b) a push button (c) a toggle switch (d) a slide switch
  3. 3.🔌 Is a copper wire a conductor or an insulator? (a) a conductor (b) an insulator
  4. 4.🔍 Which is the odd one out? (a) take cells out after use (b) build with an adult near (c) fly kites in open fields (d) open a phone charger
  5. 5.⚠️ Who should be with you when you build a circuit? (a) nobody (b) a stranger online (c) a trusted adult (d) a younger child
  6. 6.🔘 A bulb and a cell are joined through 2 switches on 2 side-by-side paths, one switch on each path (parallel). What is the smallest number of switches that must be ON to light the bulb?
  7. 7.Which drawing is the symbol for a diode? (a) a long and a short line (b) a circle with an X in it (c) triangle against a bar (d) many long-short pairs
  8. 8.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) cell (b) wire (c) motor (d) voltmeter
  9. 9.💡 4 identical bulbs are in parallel and each bulb has its own switch on its path. 3 of the switches are OFF and the rest are ON. How many bulbs glow?
  10. 10.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
  11. 11.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) wire (b) diode (c) ammeter (d) LED
  12. 12.💡 A battery lights 5 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) brighter (b) dimmer (c) the same
  13. 13.True or false: two or more cell symbols is the symbol for a capacitor. (a) True (b) False
  14. 14.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  15. 15.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) battery (b) motor (c) LED (d) wire
  16. 16.Which of these is safe? (a) throw cells in a fire (b) use a cable with cuts (c) build with an adult near (d) touch a switch when wet
  17. 17.🔍 Which is the odd one out? (a) fly kites in open fields (b) touch a switch when wet (c) take cells out after use (d) use small battery cells
  18. 18.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
  19. 19.💡 2 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
  20. 20.True or false: if the switch is OFF, the circuit is closed and current flows. (a) False (b) True
  21. 21.⚠️ Is it safe to touch a fallen wire? (a) safe (b) not safe
  22. 22.💡 In a series circuit, how many paths does the current have? (a) none (b) one for each bulb (c) one (d) two
  23. 23.⚠️ Is it safe to open a phone charger? (a) safe (b) not safe
  24. 24.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) both lines (c) the shorter line (d) neither line
  25. 25.🔗 Series or parallel circuit: “own switch for each bulb”? (a) series (b) parallel
  26. 26.True or false: a toggle switch stays where you flip it. (a) False (b) True
  27. 27.True or false: to keep drinks far away is not safe. (a) False (b) True
  28. 28.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) dotted circles (c) straight lines (d) little stars
  29. 29.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
  30. 30.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they all go out (c) they explode (d) they keep glowing
  31. 31.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
  32. 32.True or false: to touch a switch when wet is not safe. (a) True (b) False
  33. 33.Which of these means the circuit is open? (a) the switch is ON (b) all wires are joined (c) the loop is complete (d) a wire has come loose
  34. 34.🔘 Which kind of switch closes when tipped over? (a) a tilt switch (b) a toggle switch (c) a slide switch (d) a push button
  35. 35.True or false: a reed switch stays where you flip it. (a) True (b) False
  36. 36.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a wooden stick across the gap. Does the bulb glow? (a) No (b) Yes
  37. 37.🔋 Identical cells side by side (in parallel) give … (a) double the voltage (b) no voltage (c) half the voltage (d) the same voltage
  38. 38.🔋 Cells joined + to − in a row (series) give … (a) a smaller voltage (b) the same voltage (c) a bigger voltage (d) no voltage
  39. 39.🔍 Which is the odd one out? (a) build with an adult near (b) use small battery cells (c) stay away from pylons (d) use mains for a project
  40. 40.🔌 Is a wooden stick a conductor or an insulator? (a) a conductor (b) an insulator

Answer key

  1. closed
  2. a toggle switch
  3. a conductor
  4. open a phone charger
  5. a trusted adult
  6. 1
  7. triangle against a bar
  8. cell
  9. 1
  10. False
  11. diode
  12. dimmer
  13. False
  14. + (positive)
  15. battery
  16. build with an adult near
  17. touch a switch when wet
  18. True
  19. 0.4
  20. False
  21. not safe
  22. one
  23. not safe
  24. the longer line
  25. parallel
  26. True
  27. False
  28. straight lines
  29. + (positive)
  30. they keep glowing
  31. False
  32. True
  33. a wire has come loose
  34. a tilt switch
  35. False
  36. No
  37. the same voltage
  38. a bigger voltage
  39. use mains for a project
  40. an insulator

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