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Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 611 · 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: if the loop is complete, the circuit is closed and current flows. (a) True (b) False
  2. 2.Which drawing is the symbol for a bulb? (a) a straight line (b) triangle against a bar (c) a circle with a cross (d) a plain rectangle
  3. 3.True or false: to throw cells in a fire is not safe. (a) True (b) False
  4. 4.🔗 Series or parallel circuit: “used in house wiring”? (a) parallel (b) series
  5. 5.Which of these mainly gives out light? (a) an electric kettle (b) a doorbell (c) a night lamp (d) an electric drill
  6. 6.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
  7. 7.⚠️ About how many volts do home sockets in India supply? (a) 230 V (b) 9 V (c) 1.5 V (d) 12 V
  8. 8.True or false: a torch mainly makes movement. (a) True (b) False
  9. 9.🔋 Does a battery give electricity or use electricity? (a) gives electricity (b) uses electricity
  10. 10.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) False (b) True
  11. 11.🔗 Series or parallel circuit: “a single current path”? (a) series (b) parallel
  12. 12.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  13. 13.🔍 Which is the odd one out? (a) build with an adult near (b) climb an electric pole (c) keep drinks far away (d) stay away from pylons
  14. 14.What does a push button do? (a) closes when tipped over (b) flips up or down (c) closes near a magnet (d) works only while pressed
  15. 15.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) battery (b) resistor (c) wire (d) junction
  16. 16.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a plastic straw. Does the bulb glow? (a) No (b) Yes
  17. 17.What does a toggle switch do? (a) flips up or down (b) works only while pressed (c) closes when tipped over (d) closes near a magnet
  18. 18.True or false: a room heater mainly makes movement. (a) True (b) False
  19. 19.True or false: a reed switch closes near a magnet. (a) False (b) True
  20. 20.True or false: a push button stays where you flip it. (a) False (b) True
  21. 21.What does a tilt switch do? (a) slides side to side (b) closes when tipped over (c) stays where you flip it (d) works only while pressed
  22. 22.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a long wire (b) a fuse or MCB (c) a plug top (d) a bulb
  23. 23.🔁 Is the circuit closed or open if the loop is complete? (a) open (b) closed
  24. 24.🔦 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 glass marble. Does the bulb glow? (a) No (b) Yes
  25. 25.🔘 Which kind of switch closes when tipped over? (a) a reed switch (b) a slide switch (c) a tilt switch (d) a push button
  26. 26.True or false: a ceiling fan mainly makes sound. (a) False (b) True
  27. 27.🔋 Identical cells side by side (in parallel) give … (a) no voltage (b) half the voltage (c) the same voltage (d) double the voltage
  28. 28.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
  29. 29.⚡ What does a street light mainly change electricity into? (a) sound (b) heat (c) light (d) movement
  30. 30.🔋 3 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  31. 31.Which drawing is the symbol for a resistor? (a) one tall, one short bar (b) triangle, bar and arrows (c) a long and a short line (d) a small empty box
  32. 32.Which drawing is the symbol for a capacitor? (a) a long and a short line (b) a circle with A inside (c) two equal parallel lines (d) a circle with M inside
  33. 33.🔋 2 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
  34. 34.💡 6 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulb 6 is taken out of its holder. How many bulbs glow?
  35. 35.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
  36. 36.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) bulb (b) switch (c) capacitor (d) junction
  37. 37.🔁 Is the circuit closed or open if a wire is cut? (a) closed (b) open
  38. 38.True or false: to dry your hands first is safe. (a) False (b) True
  39. 39.True or false: many long-short pairs is the symbol for a battery. (a) False (b) True
  40. 40.True or false: to use small battery cells is not safe. (a) False (b) True

Answer key

  1. True
  2. a circle with a cross
  3. True
  4. parallel
  5. a night lamp
  6. True
  7. 230 V
  8. False
  9. gives electricity
  10. False
  11. series
  12. − (negative)
  13. climb an electric pole
  14. works only while pressed
  15. resistor
  16. No
  17. flips up or down
  18. False
  19. True
  20. False
  21. closes when tipped over
  22. a fuse or MCB
  23. closed
  24. No
  25. a tilt switch
  26. False
  27. the same voltage
  28. False
  29. light
  30. 4.5
  31. a small empty box
  32. two equal parallel lines
  33. 3
  34. 5
  35. False
  36. capacitor
  37. open
  38. True
  39. True
  40. False

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