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Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 310 · 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) quick and clear for all (b) to make it colourful (c) symbols are heavier (d) to hide the circuit
  2. 2.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) neither line (c) both lines (d) the shorter line
  3. 3.True or false: two or more cell symbols is the symbol for an LED. (a) True (b) False
  4. 4.True or false: triangle against a bar is the symbol for a wire. (a) False (b) True
  5. 5.Which drawing is the symbol for a cell? (a) a long and a short line (b) a dot where wires meet (c) two or more cell symbols (d) a circle with V inside
  6. 6.True or false: a small empty box is the symbol for a resistor. (a) False (b) True
  7. 7.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) bulb (b) junction (c) resistor (d) motor
  8. 8.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) resistor (b) wire (c) diode (d) bulb
  9. 9.Which drawing is the symbol for a junction? (a) a circle with a cross (b) many long-short pairs (c) triangle, bar and arrows (d) a dot where wires meet
  10. 10.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) diode (b) voltmeter (c) resistor (d) motor
  11. 11.True or false: a dot where wires meet is the symbol for an LED. (a) False (b) True
  12. 12.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) ammeter (b) switch (c) cell (d) LED
  13. 13.True or false: two equal parallel lines is the symbol for a battery. (a) True (b) False
  14. 14.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) voltmeter (b) LED (c) junction (d) switch
  15. 15.True or false: a circle with A inside is the symbol for a voltmeter. (a) True (b) False
  16. 16.True or false: two or more cell symbols is the symbol for a capacitor. (a) False (b) True
  17. 17.Which drawing is the symbol for a switch? (a) a line lifted at a gap (b) two equal parallel lines (c) a circle with an X in it (d) a plain rectangle
  18. 18.True or false: one tall, one short bar is the symbol for a cell. (a) False (b) True
  19. 19.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) little stars (c) wavy lines (d) dotted circles
  20. 20.True or false: a straight line is the symbol for a resistor. (a) False (b) True
  21. 21.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) wire (b) capacitor (c) junction (d) battery
  22. 22.Which drawing is the symbol for a diode? (a) a circle with a cross (b) one tall, one short bar (c) triangle against a bar (d) many long-short pairs
  23. 23.True or false: a circle with V inside is the symbol for a motor. (a) False (b) True
  24. 24.True or false: a circle with M inside is the symbol for a bulb. (a) False (b) True
  25. 25.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) wire (b) junction (c) battery (d) voltmeter
  26. 26.True or false: a straight line is the symbol for an LED. (a) True (b) False
  27. 27.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) cell (b) junction (c) switch (d) diode
  28. 28.True or false: a plain rectangle is the symbol for a junction. (a) True (b) False
  29. 29.Which drawing is the symbol for a wire? (a) two or more cell symbols (b) two equal parallel lines (c) a circle with an X in it (d) a straight line
  30. 30.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) wire (b) LED (c) battery (d) motor
  31. 31.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) capacitor (b) diode (c) battery (d) resistor
  32. 32.True or false: a long and a short line is the symbol for a cell. (a) False (b) True
  33. 33.Which drawing is the symbol for a bulb? (a) a dot where wires meet (b) two or more cell symbols (c) a circle with an X in it (d) triangle, bar and arrows
  34. 34.Which drawing is the symbol for a voltmeter? (a) a circle with V inside (b) a line lifted at a gap (c) a straight line (d) a circle with a cross
  35. 35.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) junction (b) bulb (c) ammeter (d) motor
  36. 36.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) battery (b) bulb (c) resistor (d) motor
  37. 37.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) bulb (b) resistor (c) battery (d) cell
  38. 38.True or false: a plain rectangle is the symbol for a resistor. (a) True (b) False
  39. 39.True or false: two equal parallel lines is the symbol for a cell. (a) True (b) False
  40. 40.True or false: a circle with V inside is the symbol for a junction. (a) True (b) False

Answer key

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

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