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Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 633 · 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.True or false: triangle, bar and arrows is the symbol for a battery. (a) True (b) False
  2. 2.Which drawing is the symbol for a bulb? (a) triangle against a bar (b) a circle with a cross (c) a small empty box (d) two equal parallel lines
  3. 3.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) little stars (c) dotted circles (d) straight lines
  4. 4.Which drawing is the symbol for a diode? (a) a plain rectangle (b) a circle with A inside (c) triangle against a bar (d) one tall, one short bar
  5. 5.True or false: two equal parallel lines is the symbol for a wire. (a) False (b) True
  6. 6.✏️ 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
  7. 7.True or false: a dot where wires meet is the symbol for a motor. (a) False (b) True
  8. 8.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) capacitor (b) bulb (c) battery (d) resistor
  9. 9.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) bulb (b) LED (c) motor (d) battery
  10. 10.True or false: a circle with V inside is the symbol for a battery. (a) False (b) True
  11. 11.Which drawing is the symbol for a resistor? (a) a circle with an X in it (b) a small empty box (c) a line lifted at a gap (d) a long and a short line
  12. 12.True or false: a long and a short line is the symbol for a wire. (a) False (b) True
  13. 13.True or false: a long and a short line is the symbol for a junction. (a) True (b) False
  14. 14.True or false: a circle with a cross is the symbol for a bulb. (a) True (b) False
  15. 15.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) junction (b) bulb (c) LED (d) cell
  16. 16.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) diode (b) junction (c) resistor (d) LED
  17. 17.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) ammeter (b) voltmeter (c) cell (d) switch
  18. 18.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) junction (b) switch (c) battery (d) ammeter
  19. 19.True or false: a plain rectangle is the symbol for a resistor. (a) False (b) True
  20. 20.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) the longer line (c) neither line (d) both lines
  21. 21.True or false: a long and a short line is the symbol for a cell. (a) True (b) False
  22. 22.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) bulb (b) wire (c) capacitor (d) junction
  23. 23.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) diode (b) switch (c) battery (d) capacitor
  24. 24.True or false: a small empty box is the symbol for a resistor. (a) False (b) True
  25. 25.True or false: a plain rectangle is the symbol for a capacitor. (a) True (b) False
  26. 26.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) bulb (b) wire (c) capacitor (d) battery
  27. 27.Which drawing is the symbol for a motor? (a) a circle with M inside (b) a long and a short line (c) a circle with V inside (d) a circle with A inside
  28. 28.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) voltmeter (b) battery (c) bulb (d) motor
  29. 29.True or false: a dot where wires meet is the symbol for a junction. (a) True (b) False
  30. 30.✏️ In a circuit diagram, which part is drawn as a straight line? (a) motor (b) voltmeter (c) wire (d) ammeter
  31. 31.Which drawing is the symbol for a resistor? (a) a plain rectangle (b) a dot where wires meet (c) one tall, one short bar (d) a line lifted at a gap
  32. 32.Which drawing is the symbol for a junction? (a) a circle with V inside (b) two or more cell symbols (c) triangle, bar and arrows (d) a dot where wires meet
  33. 33.Which drawing is the symbol for a voltmeter? (a) two equal parallel lines (b) a circle with V inside (c) a line lifted at a gap (d) many long-short pairs
  34. 34.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) motor (b) junction (c) bulb (d) cell
  35. 35.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) wire (b) resistor (c) switch (d) motor
  36. 36.True or false: a line lifted at a gap is the symbol for a switch. (a) True (b) False
  37. 37.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) capacitor (b) motor (c) diode (d) LED
  38. 38.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) ammeter (b) LED (c) switch (d) battery
  39. 39.True or false: a circle with A inside is the symbol for an ammeter. (a) False (b) True
  40. 40.True or false: one tall, one short bar is the symbol for a cell. (a) True (b) False

Answer key

  1. False
  2. a circle with a cross
  3. straight lines
  4. triangle against a bar
  5. False
  6. quick and clear for all
  7. False
  8. resistor
  9. bulb
  10. False
  11. a small empty box
  12. False
  13. False
  14. True
  15. cell
  16. LED
  17. cell
  18. switch
  19. True
  20. the longer line
  21. True
  22. junction
  23. capacitor
  24. True
  25. False
  26. battery
  27. a circle with M inside
  28. battery
  29. True
  30. wire
  31. a plain rectangle
  32. a dot where wires meet
  33. a circle with V inside
  34. bulb
  35. motor
  36. True
  37. diode
  38. ammeter
  39. True
  40. True

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