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Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 576 · 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.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) resistor (b) LED (c) bulb (d) battery
  2. 2.⚡ A solar panel changes which kind of energy into electricity? (a) sound energy (b) light energy (c) chemical energy (d) wind energy
  3. 3.True or false: a dot where wires meet is the symbol for a voltmeter. (a) True (b) False
  4. 4.True or false: to fly kites in open fields is not safe. (a) True (b) False
  5. 5.Which of these mainly makes movement? (a) a loudspeaker (b) a water heater (c) a mixer grinder (d) a street light
  6. 6.🔗 Series or parallel circuit: “many paths for current”? (a) parallel (b) series
  7. 7.🔦 A circuit has a used-up (dead) 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 ceramic cup. Does the bulb glow? (a) No (b) Yes
  8. 8.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
  9. 9.⚠️ Is it safe to keep drinks far away? (a) not safe (b) safe
  10. 10.🔍 Which is the odd one out? (a) a loudspeaker (b) a siren (c) an electric iron (d) a doorbell
  11. 11.🔍 Which is the odd one out? (a) aluminium foil (b) a steel spoon (c) a plastic ruler (d) a brass key
  12. 12.🔍 Which is the odd one out? (a) a steel spoon (b) a paper strip (c) a plastic ruler (d) a cotton thread
  13. 13.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
  14. 14.🔘 Two switches are in series. When does the bulb glow? (a) when either is ON (b) never (c) when both are OFF (d) when both are ON
  15. 15.Which of these uses electricity? (a) a cell (b) a generator (c) a solar panel (d) a television
  16. 16.True or false: a night lamp mainly gives out light. (a) False (b) True
  17. 17.⚠️ Which power source should children use for electronics projects? (a) a mains extension board (b) an inverter socket (c) a wall socket (d) a small battery pack
  18. 18.🔋 Does a refrigerator give electricity or use electricity? (a) gives electricity (b) uses electricity
  19. 19.🔗 Series or parallel circuit: “a single current path”? (a) series (b) parallel
  20. 20.What does a toggle switch do? (a) slides side to side (b) closes near a magnet (c) flips up or down (d) works only while pressed
  21. 21.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  22. 22.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
  23. 23.True or false: many long-short pairs is the symbol for a battery. (a) True (b) False
  24. 24.True or false: on a cell, “the flat end” means the + (positive) end. (a) True (b) False
  25. 25.💡 5 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
  26. 26.🔁 What must there be for a current to flow? (a) a complete loop (b) a broken path (c) a plastic gap (d) one loose end
  27. 27.🔌 Which metal is used for most electric wires at home? (a) plastic (b) copper (c) rubber (d) glass
  28. 28.True or false: to stay away from pylons is not safe. (a) False (b) True
  29. 29.🔍 Which is the odd one out? (a) a table fan (b) a mixer grinder (c) a doorbell (d) an electric drill
  30. 30.🔋 Does a wind turbine give electricity or use electricity? (a) uses electricity (b) gives electricity
  31. 31.Which of these is not safe? (a) keep drinks far away (b) throw cells in a fire (c) use small battery cells (d) stop if a part gets hot
  32. 32.Which of these is true of a series circuit? (a) each gets the full volts (b) one out, the rest glow (c) a single current path (d) own switch for each bulb
  33. 33.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) wavy lines (c) dotted circles (d) little stars
  34. 34.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the base (b) the glass (c) the filament (d) the switch
  35. 35.Which of these is safe? (a) touch a switch when wet (b) throw cells in a fire (c) keep drinks far away (d) open a phone charger
  36. 36.🔘 Which kind of switch closes when tipped over? (a) a tilt switch (b) a push button (c) a reed switch (d) a slide switch
  37. 37.🔦 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 aluminium foil. Does the bulb glow? (a) No (b) Yes
  38. 38.🔘 What does a switch do in a circuit? (a) makes electricity (b) changes the voltage (c) stores current (d) opens or closes the loop
  39. 39.💡 2 identical bulbs are joined in series with a 2 V battery (ideal wires). How many volts does each bulb get? =
  40. 40.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) True (b) False

Answer key

  1. LED
  2. light energy
  3. False
  4. False
  5. a mixer grinder
  6. parallel
  7. No
  8. − (negative)
  9. safe
  10. an electric iron
  11. a plastic ruler
  12. a steel spoon
  13. True
  14. when both are ON
  15. a television
  16. True
  17. a small battery pack
  18. uses electricity
  19. series
  20. flips up or down
  21. − (negative)
  22. − (negative)
  23. True
  24. False
  25. 1
  26. a complete loop
  27. copper
  28. False
  29. a doorbell
  30. gives electricity
  31. throw cells in a fire
  32. a single current path
  33. straight lines
  34. the filament
  35. keep drinks far away
  36. a tilt switch
  37. No
  38. opens or closes the loop
  39. 1
  40. False

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