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Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 129 · 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.Which drawing is the symbol for a bulb? (a) one tall, one short bar (b) a line lifted at a gap (c) two or more cell symbols (d) a circle with an X in it
  2. 2.True or false: a circle with an X in it is the symbol for an LED. (a) True (b) False
  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.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) symbols are heavier (c) to hide the circuit (d) quick and clear for all
  5. 5.✏️ In a circuit diagram, which part is drawn as a straight line? (a) ammeter (b) motor (c) resistor (d) wire
  6. 6.True or false: a circle with a cross is the symbol for a bulb. (a) True (b) False
  7. 7.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) resistor (b) battery (c) diode (d) junction
  8. 8.True or false: two or more cell symbols is the symbol for an LED. (a) True (b) False
  9. 9.True or false: a small empty box is the symbol for an ammeter. (a) False (b) True
  10. 10.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) motor (b) capacitor (c) switch (d) voltmeter
  11. 11.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) battery (b) capacitor (c) resistor (d) ammeter
  12. 12.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) LED (b) diode (c) junction (d) capacitor
  13. 13.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) motor (b) junction (c) bulb (d) battery
  14. 14.Which drawing is the symbol for a wire? (a) a circle with M inside (b) a long and a short line (c) a circle with a cross (d) a straight line
  15. 15.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) wire (b) switch (c) bulb (d) diode
  16. 16.Which drawing is the symbol for a motor? (a) a long and a short line (b) triangle, bar and arrows (c) many long-short pairs (d) a circle with M inside
  17. 17.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) resistor (b) junction (c) battery (d) capacitor
  18. 18.True or false: a long and a short line is the symbol for a junction. (a) True (b) False
  19. 19.True or false: a circle with a cross is the symbol for an ammeter. (a) True (b) False
  20. 20.True or false: a dot where wires meet is the symbol for a voltmeter. (a) True (b) False
  21. 21.True or false: a circle with A inside is the symbol for a capacitor. (a) False (b) True
  22. 22.True or false: triangle, bar and arrows is the symbol for an LED. (a) True (b) False
  23. 23.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) ammeter (b) battery (c) motor (d) diode
  24. 24.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) bulb (b) motor (c) wire (d) cell
  25. 25.True or false: many long-short pairs is the symbol for a resistor. (a) False (b) True
  26. 26.True or false: triangle, bar and arrows is the symbol for a capacitor. (a) True (b) False
  27. 27.Which drawing is the symbol for a voltmeter? (a) a circle with V inside (b) a circle with an X in it (c) a circle with a cross (d) triangle against a bar
  28. 28.True or false: a dot where wires meet is the symbol for a resistor. (a) True (b) False
  29. 29.True or false: a line lifted at a gap is the symbol for a switch. (a) True (b) False
  30. 30.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) switch (b) wire (c) battery (d) ammeter
  31. 31.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) the shorter line (c) the longer line (d) both lines
  32. 32.True or false: a small empty box is the symbol for a bulb. (a) True (b) False
  33. 33.True or false: triangle, bar and arrows is the symbol for a switch. (a) True (b) False
  34. 34.Which drawing is the symbol for a battery? (a) a small empty box (b) many long-short pairs (c) a circle with a cross (d) a straight line
  35. 35.True or false: a dot where wires meet is the symbol for a junction. (a) True (b) False
  36. 36.Which drawing is the symbol for a switch? (a) a dot where wires meet (b) a plain rectangle (c) a circle with A inside (d) a line lifted at a gap
  37. 37.Which drawing is the symbol for a resistor? (a) a small empty box (b) one tall, one short bar (c) a circle with an X in it (d) a circle with A inside
  38. 38.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) cell (b) LED (c) bulb (d) diode
  39. 39.True or false: a line lifted at a gap is the symbol for a resistor. (a) False (b) True
  40. 40.True or false: a long and a short line is the symbol for a switch. (a) True (b) False

Answer key

  1. a circle with an X in it
  2. False
  3. straight lines
  4. quick and clear for all
  5. wire
  6. True
  7. resistor
  8. False
  9. False
  10. voltmeter
  11. ammeter
  12. diode
  13. junction
  14. a straight line
  15. bulb
  16. a circle with M inside
  17. resistor
  18. False
  19. False
  20. False
  21. False
  22. True
  23. battery
  24. motor
  25. False
  26. False
  27. a circle with V inside
  28. False
  29. True
  30. battery
  31. the longer line
  32. False
  33. False
  34. many long-short pairs
  35. True
  36. a line lifted at a gap
  37. a small empty box
  38. cell
  39. False
  40. False

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