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Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 537 · 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) symbols are heavier (b) to hide the circuit (c) to make it colourful (d) quick and clear for all
  2. 2.True or false: triangle against a bar is the symbol for a diode. (a) False (b) True
  3. 3.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) the longer line (c) neither line (d) both lines
  4. 4.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) diode (b) resistor (c) voltmeter (d) wire
  5. 5.True or false: one tall, one short bar is the symbol for a cell. (a) True (b) False
  6. 6.True or false: triangle against a bar is the symbol for a switch. (a) True (b) False
  7. 7.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) switch (b) motor (c) voltmeter (d) junction
  8. 8.Which drawing is the symbol for a bulb? (a) a circle with V inside (b) a long and a short line (c) a circle with an X in it (d) triangle, bar and arrows
  9. 9.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) LED (b) junction (c) switch (d) voltmeter
  10. 10.True or false: a line lifted at a gap is the symbol for a switch. (a) False (b) True
  11. 11.Which drawing is the symbol for a switch? (a) one tall, one short bar (b) two or more cell symbols (c) a small empty box (d) a line lifted at a gap
  12. 12.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) switch (b) battery (c) wire (d) cell
  13. 13.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) cell (b) wire (c) bulb (d) voltmeter
  14. 14.True or false: a small empty box is the symbol for a resistor. (a) False (b) True
  15. 15.True or false: a plain rectangle is the symbol for a cell. (a) False (b) True
  16. 16.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) diode (b) bulb (c) voltmeter (d) switch
  17. 17.True or false: two equal parallel lines is the symbol for a capacitor. (a) False (b) True
  18. 18.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) switch (b) wire (c) motor (d) capacitor
  19. 19.True or false: triangle, bar and arrows is the symbol for an LED. (a) False (b) True
  20. 20.True or false: triangle, bar and arrows is the symbol for a cell. (a) False (b) True
  21. 21.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) wavy lines (c) little stars (d) straight lines
  22. 22.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) cell (b) bulb (c) resistor (d) junction
  23. 23.True or false: a long and a short line is the symbol for a wire. (a) True (b) False
  24. 24.Which drawing is the symbol for a bulb? (a) a circle with a cross (b) two equal parallel lines (c) a small empty box (d) many long-short pairs
  25. 25.True or false: a small empty box is the symbol for a diode. (a) True (b) False
  26. 26.Which drawing is the symbol for a capacitor? (a) a plain rectangle (b) a long and a short line (c) two equal parallel lines (d) many long-short pairs
  27. 27.True or false: triangle against a bar is the symbol for a bulb. (a) True (b) False
  28. 28.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) resistor (b) diode (c) bulb (d) ammeter
  29. 29.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) battery (b) motor (c) diode (d) cell
  30. 30.True or false: a circle with A inside is the symbol for an ammeter. (a) False (b) True
  31. 31.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) junction (b) resistor (c) bulb (d) diode
  32. 32.True or false: many long-short pairs is the symbol for a battery. (a) False (b) True
  33. 33.True or false: a circle with A inside is the symbol for a cell. (a) False (b) True
  34. 34.✏️ In a circuit diagram, which part is drawn as a straight line? (a) ammeter (b) motor (c) capacitor (d) wire
  35. 35.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) switch (b) battery (c) resistor (d) capacitor
  36. 36.True or false: two or more cell symbols is the symbol for a voltmeter. (a) True (b) False
  37. 37.Which drawing is the symbol for a junction? (a) a circle with an X in it (b) a small empty box (c) a dot where wires meet (d) a long and a short line
  38. 38.Which drawing is the symbol for an LED? (a) a straight line (b) triangle, bar and arrows (c) many long-short pairs (d) one tall, one short bar
  39. 39.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) battery (b) wire (c) capacitor (d) bulb
  40. 40.Which drawing is the symbol for a voltmeter? (a) one tall, one short bar (b) a dot where wires meet (c) a circle with V inside (d) a circle with a cross

Answer key

  1. quick and clear for all
  2. True
  3. the longer line
  4. resistor
  5. True
  6. False
  7. voltmeter
  8. a circle with an X in it
  9. junction
  10. True
  11. a line lifted at a gap
  12. cell
  13. bulb
  14. True
  15. False
  16. switch
  17. True
  18. motor
  19. True
  20. False
  21. straight lines
  22. bulb
  23. False
  24. a circle with a cross
  25. False
  26. two equal parallel lines
  27. False
  28. resistor
  29. battery
  30. True
  31. diode
  32. True
  33. False
  34. wire
  35. capacitor
  36. False
  37. a dot where wires meet
  38. triangle, bar and arrows
  39. battery
  40. a circle with V inside

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