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Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 777 · 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 voltmeter? (a) a circle with a cross (b) a circle with V inside (c) a line lifted at a gap (d) one tall, one short bar
  2. 2.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) quick and clear for all (c) to hide the circuit (d) to make it colourful
  3. 3.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) little stars (c) wavy lines (d) straight lines
  4. 4.Which drawing is the symbol for a switch? (a) a circle with V inside (b) a circle with an X in it (c) a line lifted at a gap (d) a straight line
  5. 5.True or false: a circle with V inside is the symbol for a junction. (a) False (b) True
  6. 6.True or false: many long-short pairs is the symbol for a battery. (a) True (b) False
  7. 7.True or false: a straight line is the symbol for a wire. (a) True (b) False
  8. 8.True or false: triangle against a bar is the symbol for a capacitor. (a) True (b) False
  9. 9.True or false: a circle with A inside is the symbol for an ammeter. (a) True (b) False
  10. 10.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) diode (b) switch (c) cell (d) bulb
  11. 11.True or false: two equal parallel lines is the symbol for a voltmeter. (a) False (b) True
  12. 12.True or false: a circle with V inside is the symbol for a voltmeter. (a) False (b) True
  13. 13.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) neither line (c) both lines (d) the longer line
  14. 14.True or false: many long-short pairs is the symbol for an ammeter. (a) True (b) False
  15. 15.Which drawing is the symbol for a resistor? (a) a dot where wires meet (b) a plain rectangle (c) triangle, bar and arrows (d) a line lifted at a gap
  16. 16.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) LED (b) battery (c) junction (d) capacitor
  17. 17.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) ammeter (b) battery (c) junction (d) capacitor
  18. 18.Which drawing is the symbol for a bulb? (a) a circle with an X in it (b) triangle, bar and arrows (c) a line lifted at a gap (d) a circle with M inside
  19. 19.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) motor (b) resistor (c) switch (d) battery
  20. 20.✏️ In a circuit diagram, which part is drawn as a straight line? (a) cell (b) resistor (c) wire (d) ammeter
  21. 21.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) junction (b) battery (c) LED (d) capacitor
  22. 22.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) diode (b) ammeter (c) voltmeter (d) battery
  23. 23.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) switch (b) resistor (c) voltmeter (d) battery
  24. 24.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) LED (b) diode (c) capacitor (d) switch
  25. 25.True or false: one tall, one short bar is the symbol for a cell. (a) False (b) True
  26. 26.True or false: a circle with M inside is the symbol for a capacitor. (a) False (b) True
  27. 27.True or false: a small empty box is the symbol for a wire. (a) False (b) True
  28. 28.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) bulb (b) battery (c) LED (d) junction
  29. 29.Which drawing is the symbol for a capacitor? (a) one tall, one short bar (b) a circle with V inside (c) a circle with an X in it (d) two equal parallel lines
  30. 30.True or false: triangle against a bar is the symbol for a battery. (a) False (b) True
  31. 31.True or false: a dot where wires meet is the symbol for a junction. (a) False (b) True
  32. 32.Which drawing is the symbol for an LED? (a) triangle against a bar (b) a small empty box (c) triangle, bar and arrows (d) a straight line
  33. 33.Which drawing is the symbol for a cell? (a) one tall, one short bar (b) triangle, bar and arrows (c) a small empty box (d) two equal parallel lines
  34. 34.Which drawing is the symbol for a motor? (a) triangle against a bar (b) a circle with a cross (c) triangle, bar and arrows (d) a circle with M inside
  35. 35.True or false: a long and a short line is the symbol for a junction. (a) True (b) False
  36. 36.True or false: one tall, one short bar is the symbol for a junction. (a) True (b) False
  37. 37.True or false: a plain rectangle is the symbol for a resistor. (a) True (b) False
  38. 38.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) diode (b) cell (c) capacitor (d) wire
  39. 39.True or false: a dot where wires meet is the symbol for a switch. (a) False (b) True
  40. 40.True or false: a small empty box is the symbol for a battery. (a) False (b) True

Answer key

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

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