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Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 199 · 40 questions
TalentJR

Remember (Shape tells the part): Cell: long and short line (long = +). Battery: two or more cells. Wire: straight line. Junction: a dot. Bulb: circle with a cross. Switch: line lifted at a gap. Resistor: rectangle. Capacitor: two equal parallel lines. Diode: triangle against a bar; LED: the same with two arrows out. Circle with M = motor, A = ammeter, V = voltmeter.

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  1. 1.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) to hide the circuit (c) symbols are heavier (d) quick and clear for all
  2. 2.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) junction (b) wire (c) ammeter (d) resistor
  3. 3.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) switch (b) battery (c) wire (d) capacitor
  4. 4.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) wire (b) LED (c) cell (d) capacitor
  5. 5.Which drawing is the symbol for a wire? (a) two or more cell symbols (b) a straight line (c) a circle with V inside (d) a small empty box
  6. 6.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) little stars (c) dotted circles (d) wavy lines
  7. 7.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) both lines (c) neither line (d) the shorter line
  8. 8.True or false: one tall, one short bar is the symbol for a cell. (a) True (b) False
  9. 9.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) ammeter (b) switch (c) wire (d) junction
  10. 10.True or false: a circle with V inside is the symbol for a voltmeter. (a) True (b) False
  11. 11.True or false: a circle with A inside is the symbol for a battery. (a) True (b) False
  12. 12.Which drawing is the symbol for an ammeter? (a) two equal parallel lines (b) a circle with A inside (c) a circle with V inside (d) many long-short pairs
  13. 13.Which drawing is the symbol for an LED? (a) two equal parallel lines (b) a dot where wires meet (c) triangle, bar and arrows (d) a circle with V inside
  14. 14.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) switch (b) motor (c) wire (d) diode
  15. 15.Which drawing is the symbol for a cell? (a) a circle with a cross (b) a long and a short line (c) a circle with A inside (d) triangle against a bar
  16. 16.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) motor (b) resistor (c) bulb (d) battery
  17. 17.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) voltmeter (b) motor (c) bulb (d) diode
  18. 18.True or false: triangle against a bar is the symbol for a resistor. (a) True (b) False
  19. 19.Which drawing is the symbol for a battery? (a) triangle, bar and arrows (b) a small empty box (c) a straight line (d) two or more cell symbols
  20. 20.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) voltmeter (b) junction (c) switch (d) diode
  21. 21.True or false: a circle with A inside is the symbol for an ammeter. (a) True (b) False
  22. 22.Which drawing is the symbol for a cell? (a) one tall, one short bar (b) a small empty box (c) triangle, bar and arrows (d) two equal parallel lines
  23. 23.Which drawing is the symbol for a diode? (a) a dot where wires meet (b) a circle with a cross (c) a circle with V inside (d) triangle against a bar
  24. 24.True or false: a long and a short line is the symbol for a diode. (a) True (b) False
  25. 25.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) diode (b) motor (c) wire (d) battery
  26. 26.True or false: a line lifted at a gap is the symbol for a switch. (a) True (b) False
  27. 27.True or false: a straight line is the symbol for a resistor. (a) False (b) True
  28. 28.True or false: a circle with an X in it is the symbol for a wire. (a) False (b) True
  29. 29.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) switch (b) capacitor (c) cell (d) voltmeter
  30. 30.True or false: a long and a short line is the symbol for a cell. (a) False (b) True
  31. 31.True or false: many long-short pairs is the symbol for a capacitor. (a) True (b) False
  32. 32.True or false: a small empty box is the symbol for a battery. (a) True (b) False
  33. 33.Which drawing is the symbol for a motor? (a) a small empty box (b) a circle with V inside (c) a circle with M inside (d) two equal parallel lines
  34. 34.True or false: a circle with V inside is the symbol for an LED. (a) False (b) True
  35. 35.True or false: a plain rectangle is the symbol for a resistor. (a) False (b) True
  36. 36.✏️ In a circuit diagram, which part is drawn as a straight line? (a) bulb (b) LED (c) junction (d) wire
  37. 37.True or false: a long and a short line is the symbol for a bulb. (a) True (b) False
  38. 38.True or false: one tall, one short bar is the symbol for a switch. (a) True (b) False
  39. 39.True or false: triangle against a bar is the symbol for a junction. (a) False (b) True
  40. 40.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) resistor (b) bulb (c) motor (d) cell

Answer key

  1. quick and clear for all
  2. resistor
  3. capacitor
  4. cell
  5. a straight line
  6. straight lines
  7. the longer line
  8. True
  9. ammeter
  10. True
  11. False
  12. a circle with A inside
  13. triangle, bar and arrows
  14. diode
  15. a long and a short line
  16. battery
  17. bulb
  18. False
  19. two or more cell symbols
  20. voltmeter
  21. True
  22. one tall, one short bar
  23. triangle against a bar
  24. False
  25. battery
  26. True
  27. False
  28. False
  29. switch
  30. True
  31. False
  32. False
  33. a circle with M inside
  34. False
  35. True
  36. wire
  37. False
  38. False
  39. False
  40. cell

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