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Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 490 · 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) to make it colourful (b) to hide the circuit (c) quick and clear for all (d) symbols are heavier
  2. 2.Which drawing is the symbol for a battery? (a) many long-short pairs (b) one tall, one short bar (c) two equal parallel lines (d) triangle against a bar
  3. 3.True or false: triangle, bar and arrows is the symbol for an LED. (a) False (b) True
  4. 4.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) cell (b) switch (c) capacitor (d) diode
  5. 5.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) capacitor (b) cell (c) ammeter (d) wire
  6. 6.True or false: a circle with V inside is the symbol for a diode. (a) True (b) False
  7. 7.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) ammeter (b) bulb (c) switch (d) junction
  8. 8.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) little stars (c) dotted circles (d) wavy lines
  9. 9.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) junction (b) diode (c) switch (d) resistor
  10. 10.Which drawing is the symbol for a bulb? (a) a circle with a cross (b) a circle with A inside (c) a long and a short line (d) a plain rectangle
  11. 11.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) neither line (c) the longer line (d) the shorter line
  12. 12.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) diode (b) cell (c) switch (d) bulb
  13. 13.True or false: a circle with A inside is the symbol for an ammeter. (a) False (b) True
  14. 14.Which drawing is the symbol for a voltmeter? (a) a circle with V inside (b) two equal parallel lines (c) a plain rectangle (d) a straight line
  15. 15.True or false: two or more cell symbols is the symbol for a capacitor. (a) True (b) False
  16. 16.True or false: a dot where wires meet is the symbol for an LED. (a) True (b) False
  17. 17.True or false: a straight line is the symbol for an LED. (a) True (b) False
  18. 18.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) bulb (b) ammeter (c) diode (d) capacitor
  19. 19.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) motor (b) resistor (c) bulb (d) LED
  20. 20.True or false: a circle with an X in it is the symbol for an ammeter. (a) False (b) True
  21. 21.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) motor (b) bulb (c) voltmeter (d) junction
  22. 22.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) diode (b) battery (c) bulb (d) wire
  23. 23.Which drawing is the symbol for a bulb? (a) a circle with A inside (b) a circle with an X in it (c) a small empty box (d) a plain rectangle
  24. 24.True or false: a small empty box is the symbol for a cell. (a) False (b) True
  25. 25.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) motor (b) bulb (c) cell (d) diode
  26. 26.Which drawing is the symbol for an ammeter? (a) a small empty box (b) triangle, bar and arrows (c) a circle with A inside (d) a long and a short line
  27. 27.True or false: two equal parallel lines is the symbol for a bulb. (a) True (b) False
  28. 28.True or false: a circle with A inside is the symbol for a capacitor. (a) False (b) True
  29. 29.✏️ In a circuit diagram, which part is drawn as a straight line? (a) battery (b) wire (c) ammeter (d) cell
  30. 30.True or false: two equal parallel lines is the symbol for an LED. (a) False (b) True
  31. 31.True or false: a line lifted at a gap is the symbol for a capacitor. (a) True (b) False
  32. 32.True or false: one tall, one short bar is the symbol for a switch. (a) False (b) True
  33. 33.True or false: triangle against a bar is the symbol for a motor. (a) True (b) False
  34. 34.True or false: one tall, one short bar is the symbol for a resistor. (a) True (b) False
  35. 35.Which drawing is the symbol for a cell? (a) one tall, one short bar (b) a circle with an X in it (c) many long-short pairs (d) a circle with A inside
  36. 36.True or false: a long and a short line is the symbol for a cell. (a) False (b) True
  37. 37.Which drawing is the symbol for a motor? (a) two equal parallel lines (b) a plain rectangle (c) two or more cell symbols (d) a circle with M inside
  38. 38.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) LED (b) battery (c) cell (d) motor
  39. 39.Which drawing is the symbol for a capacitor? (a) triangle, bar and arrows (b) a small empty box (c) two equal parallel lines (d) a straight line
  40. 40.Which drawing is the symbol for a junction? (a) a dot where wires meet (b) triangle against a bar (c) one tall, one short bar (d) a straight line

Answer key

  1. quick and clear for all
  2. many long-short pairs
  3. True
  4. diode
  5. ammeter
  6. False
  7. switch
  8. straight lines
  9. resistor
  10. a circle with a cross
  11. the longer line
  12. cell
  13. True
  14. a circle with V inside
  15. False
  16. False
  17. False
  18. capacitor
  19. bulb
  20. False
  21. voltmeter
  22. bulb
  23. a circle with an X in it
  24. False
  25. cell
  26. a circle with A inside
  27. False
  28. False
  29. wire
  30. False
  31. False
  32. False
  33. False
  34. False
  35. one tall, one short bar
  36. True
  37. a circle with M inside
  38. battery
  39. two equal parallel lines
  40. a dot where wires meet

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