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Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 648 · 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 hide the circuit (b) quick and clear for all (c) symbols are heavier (d) to make it colourful
  2. 2.True or false: a line lifted at a gap is the symbol for a switch. (a) True (b) False
  3. 3.True or false: a circle with V inside is the symbol for a battery. (a) True (b) False
  4. 4.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) ammeter (b) switch (c) resistor (d) LED
  5. 5.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) wire (b) junction (c) diode (d) motor
  6. 6.Which drawing is the symbol for a capacitor? (a) triangle against a bar (b) a long and a short line (c) a line lifted at a gap (d) two equal parallel lines
  7. 7.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the shorter line (c) the longer line (d) neither line
  8. 8.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) dotted circles (c) wavy lines (d) straight lines
  9. 9.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) ammeter (b) wire (c) motor (d) switch
  10. 10.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) bulb (b) motor (c) battery (d) resistor
  11. 11.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) wire (b) switch (c) motor (d) battery
  12. 12.Which drawing is the symbol for an LED? (a) one tall, one short bar (b) triangle, bar and arrows (c) a circle with M inside (d) a plain rectangle
  13. 13.True or false: a dot where wires meet is the symbol for a wire. (a) True (b) False
  14. 14.True or false: a circle with an X in it is the symbol for a bulb. (a) True (b) False
  15. 15.True or false: triangle against a bar is the symbol for a diode. (a) True (b) False
  16. 16.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) ammeter (b) cell (c) diode (d) wire
  17. 17.Which drawing is the symbol for a switch? (a) a circle with M inside (b) a circle with a cross (c) a long and a short line (d) a line lifted at a gap
  18. 18.True or false: triangle, bar and arrows is the symbol for a bulb. (a) False (b) True
  19. 19.Which drawing is the symbol for a diode? (a) a circle with a cross (b) a long and a short line (c) a plain rectangle (d) triangle against a bar
  20. 20.True or false: triangle, bar and arrows is the symbol for an LED. (a) False (b) True
  21. 21.True or false: triangle against a bar is the symbol for a switch. (a) False (b) True
  22. 22.Which drawing is the symbol for a cell? (a) a circle with M inside (b) a plain rectangle (c) a circle with a cross (d) a long and a short line
  23. 23.True or false: a straight line is the symbol for a wire. (a) False (b) True
  24. 24.Which drawing is the symbol for a bulb? (a) two or more cell symbols (b) a plain rectangle (c) a dot where wires meet (d) a circle with an X in it
  25. 25.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) voltmeter (b) junction (c) diode (d) bulb
  26. 26.True or false: a small empty box is the symbol for a junction. (a) False (b) True
  27. 27.True or false: one tall, one short bar is the symbol for a voltmeter. (a) False (b) True
  28. 28.Which drawing is the symbol for a wire? (a) a straight line (b) two or more cell symbols (c) a circle with an X in it (d) a long and a short line
  29. 29.Which drawing is the symbol for a battery? (a) a circle with V inside (b) many long-short pairs (c) triangle, bar and arrows (d) triangle against a bar
  30. 30.True or false: a circle with a cross is the symbol for a bulb. (a) True (b) False
  31. 31.True or false: a dot where wires meet is the symbol for a junction. (a) True (b) False
  32. 32.True or false: a small empty box is the symbol for a resistor. (a) False (b) True
  33. 33.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) cell (b) switch (c) bulb (d) LED
  34. 34.True or false: two equal parallel lines is the symbol for a switch. (a) True (b) False
  35. 35.True or false: a circle with a cross is the symbol for a resistor. (a) False (b) True
  36. 36.Which drawing is the symbol for a voltmeter? (a) two or more cell symbols (b) a small empty box (c) a long and a short line (d) a circle with V inside
  37. 37.Which drawing is the symbol for an ammeter? (a) two equal parallel lines (b) a plain rectangle (c) a circle with an X in it (d) a circle with A inside
  38. 38.True or false: a circle with A inside is the symbol for a cell. (a) False (b) True
  39. 39.True or false: a straight line is the symbol for an LED. (a) True (b) False
  40. 40.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) motor (b) capacitor (c) battery (d) cell

Answer key

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

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