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Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 791 · 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 diode? (a) a dot where wires meet (b) triangle against a bar (c) a circle with an X in it (d) a line lifted at a gap
  2. 2.True or false: a circle with A inside is the symbol for a diode. (a) True (b) False
  3. 3.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) resistor (b) cell (c) junction (d) voltmeter
  4. 4.True or false: a line lifted at a gap is the symbol for a wire. (a) True (b) False
  5. 5.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) voltmeter (b) resistor (c) capacitor (d) junction
  6. 6.Which drawing is the symbol for a junction? (a) many long-short pairs (b) a circle with an X in it (c) a plain rectangle (d) a dot where wires meet
  7. 7.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) cell (b) diode (c) motor (d) LED
  8. 8.Which drawing is the symbol for a switch? (a) a circle with V inside (b) a line lifted at a gap (c) a circle with an X in it (d) triangle against a bar
  9. 9.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) motor (b) bulb (c) diode (d) battery
  10. 10.True or false: a circle with a cross is the symbol for a diode. (a) False (b) True
  11. 11.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) dotted circles (c) wavy lines (d) little stars
  12. 12.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) LED (b) battery (c) junction (d) diode
  13. 13.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) junction (b) cell (c) voltmeter (d) resistor
  14. 14.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) to hide the circuit (c) quick and clear for all (d) symbols are heavier
  15. 15.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) both lines (c) the longer line (d) neither line
  16. 16.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) resistor (b) battery (c) ammeter (d) LED
  17. 17.True or false: a circle with a cross is the symbol for a bulb. (a) False (b) True
  18. 18.True or false: a plain rectangle is the symbol for a resistor. (a) False (b) True
  19. 19.True or false: a circle with an X in it is the symbol for a bulb. (a) True (b) False
  20. 20.True or false: a circle with A inside is the symbol for a battery. (a) False (b) True
  21. 21.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) wire (b) switch (c) junction (d) LED
  22. 22.Which drawing is the symbol for an ammeter? (a) a straight line (b) a circle with A inside (c) two equal parallel lines (d) a long and a short line
  23. 23.True or false: triangle, bar and arrows is the symbol for a cell. (a) False (b) True
  24. 24.✏️ In a circuit diagram, which part is drawn as a straight line? (a) voltmeter (b) wire (c) resistor (d) bulb
  25. 25.True or false: triangle against a bar is the symbol for a bulb. (a) False (b) True
  26. 26.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) bulb (b) cell (c) diode (d) wire
  27. 27.True or false: a long and a short line is the symbol for a wire. (a) True (b) False
  28. 28.True or false: two equal parallel lines is the symbol for a switch. (a) True (b) False
  29. 29.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) junction (b) battery (c) capacitor (d) voltmeter
  30. 30.True or false: triangle, bar and arrows is the symbol for an LED. (a) True (b) False
  31. 31.True or false: two or more cell symbols is the symbol for a cell. (a) True (b) False
  32. 32.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) ammeter (b) cell (c) LED (d) diode
  33. 33.True or false: a small empty box is the symbol for a resistor. (a) True (b) False
  34. 34.True or false: a circle with M inside is the symbol for a junction. (a) False (b) True
  35. 35.True or false: a straight line is the symbol for a wire. (a) False (b) True
  36. 36.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) diode (b) switch (c) ammeter (d) battery
  37. 37.Which drawing is the symbol for a resistor? (a) two equal parallel lines (b) a circle with A inside (c) a plain rectangle (d) a long and a short line
  38. 38.True or false: two equal parallel lines is the symbol for a capacitor. (a) True (b) False
  39. 39.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) voltmeter (b) switch (c) motor (d) wire
  40. 40.True or false: a circle with A inside is the symbol for an ammeter. (a) True (b) False

Answer key

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

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