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Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 643 · 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.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) battery (b) bulb (c) LED (d) cell
  2. 2.Which drawing is the symbol for a cell? (a) a long and a short line (b) a circle with a cross (c) many long-short pairs (d) a circle with A inside
  3. 3.True or false: a plain rectangle is the symbol for an LED. (a) True (b) False
  4. 4.Which drawing is the symbol for an LED? (a) a circle with an X in it (b) triangle, bar and arrows (c) a circle with A inside (d) two or more cell symbols
  5. 5.True or false: a long and a short line is the symbol for a capacitor. (a) False (b) True
  6. 6.True or false: a circle with A inside is the symbol for an ammeter. (a) True (b) False
  7. 7.Which drawing is the symbol for a resistor? (a) a long and a short line (b) a small empty box (c) a circle with M inside (d) one tall, one short bar
  8. 8.True or false: a straight line is the symbol for a wire. (a) False (b) True
  9. 9.Which drawing is the symbol for a bulb? (a) two equal parallel lines (b) a plain rectangle (c) a long and a short line (d) a circle with an X in it
  10. 10.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) quick and clear for all (c) symbols are heavier (d) to hide the circuit
  11. 11.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) voltmeter (b) cell (c) bulb (d) junction
  12. 12.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) wavy lines (c) little stars (d) straight lines
  13. 13.Which drawing is the symbol for a battery? (a) triangle, bar and arrows (b) one tall, one short bar (c) two or more cell symbols (d) a plain rectangle
  14. 14.True or false: triangle against a bar is the symbol for a capacitor. (a) True (b) False
  15. 15.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) cell (b) resistor (c) LED (d) junction
  16. 16.Which drawing is the symbol for a wire? (a) a straight line (b) one tall, one short bar (c) many long-short pairs (d) a line lifted at a gap
  17. 17.True or false: triangle, bar and arrows is the symbol for a capacitor. (a) True (b) False
  18. 18.Which drawing is the symbol for a resistor? (a) a straight line (b) one tall, one short bar (c) a circle with an X in it (d) a plain rectangle
  19. 19.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) neither line (c) both lines (d) the longer line
  20. 20.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) wire (b) LED (c) battery (d) ammeter
  21. 21.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) battery (b) diode (c) motor (d) cell
  22. 22.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) ammeter (b) battery (c) motor (d) resistor
  23. 23.Which drawing is the symbol for a bulb? (a) a circle with A inside (b) a plain rectangle (c) two equal parallel lines (d) a circle with a cross
  24. 24.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) motor (b) voltmeter (c) switch (d) ammeter
  25. 25.True or false: many long-short pairs is the symbol for a bulb. (a) False (b) True
  26. 26.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) motor (b) capacitor (c) switch (d) resistor
  27. 27.True or false: many long-short pairs is the symbol for a battery. (a) True (b) False
  28. 28.✏️ In a circuit diagram, which part is drawn as a straight line? (a) junction (b) capacitor (c) wire (d) battery
  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 circle with V inside? (a) switch (b) voltmeter (c) bulb (d) cell
  31. 31.True or false: a circle with V inside is the symbol for a motor. (a) False (b) True
  32. 32.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) diode (b) cell (c) resistor (d) switch
  33. 33.True or false: triangle against a bar is the symbol for a junction. (a) False (b) True
  34. 34.True or false: triangle against a bar is the symbol for a diode. (a) False (b) True
  35. 35.True or false: one tall, one short bar is the symbol for a cell. (a) True (b) False
  36. 36.True or false: a dot where wires meet is the symbol for a diode. (a) False (b) True
  37. 37.True or false: a circle with a cross is the symbol for a bulb. (a) False (b) True
  38. 38.True or false: two or more cell symbols is the symbol for a battery. (a) True (b) False
  39. 39.True or false: a small empty box is the symbol for a resistor. (a) False (b) True
  40. 40.True or false: a line lifted at a gap is the symbol for an LED. (a) True (b) False

Answer key

  1. bulb
  2. a long and a short line
  3. False
  4. triangle, bar and arrows
  5. False
  6. True
  7. a small empty box
  8. True
  9. a circle with an X in it
  10. quick and clear for all
  11. junction
  12. straight lines
  13. two or more cell symbols
  14. False
  15. cell
  16. a straight line
  17. False
  18. a plain rectangle
  19. the longer line
  20. battery
  21. diode
  22. resistor
  23. a circle with a cross
  24. motor
  25. False
  26. capacitor
  27. True
  28. wire
  29. True
  30. voltmeter
  31. False
  32. cell
  33. False
  34. True
  35. True
  36. False
  37. True
  38. True
  39. True
  40. False

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