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Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 600 · 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.True or false: a small empty box is the symbol for a wire. (a) False (b) True
  2. 2.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) little stars (c) straight lines (d) dotted circles
  3. 3.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) switch (b) bulb (c) battery (d) capacitor
  4. 4.True or false: two equal parallel lines is the symbol for a capacitor. (a) False (b) True
  5. 5.True or false: triangle, bar and arrows is the symbol for an LED. (a) True (b) False
  6. 6.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) battery (b) cell (c) switch (d) ammeter
  7. 7.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) LED (b) bulb (c) motor (d) battery
  8. 8.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) switch (b) LED (c) diode (d) resistor
  9. 9.Which drawing is the symbol for a motor? (a) a circle with M inside (b) a circle with a cross (c) a dot where wires meet (d) a long and a short line
  10. 10.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) resistor (b) bulb (c) switch (d) capacitor
  11. 11.True or false: a long and a short line is the symbol for a switch. (a) True (b) False
  12. 12.True or false: a small empty box is the symbol for a resistor. (a) False (b) True
  13. 13.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) ammeter (b) switch (c) bulb (d) resistor
  14. 14.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) the longer line (c) both lines (d) neither line
  15. 15.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) capacitor (b) voltmeter (c) bulb (d) switch
  16. 16.True or false: a circle with V inside is the symbol for a capacitor. (a) True (b) False
  17. 17.True or false: a dot where wires meet is the symbol for a bulb. (a) False (b) True
  18. 18.True or false: a long and a short line is the symbol for an ammeter. (a) False (b) True
  19. 19.Which drawing is the symbol for a capacitor? (a) a plain rectangle (b) two or more cell symbols (c) two equal parallel lines (d) triangle, bar and arrows
  20. 20.True or false: a long and a short line is the symbol for a wire. (a) False (b) True
  21. 21.True or false: triangle against a bar is the symbol for a diode. (a) True (b) False
  22. 22.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) bulb (b) diode (c) cell (d) voltmeter
  23. 23.✏️ 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
  24. 24.True or false: many long-short pairs is the symbol for a wire. (a) False (b) True
  25. 25.✏️ In a circuit diagram, which part is drawn as a straight line? (a) wire (b) LED (c) bulb (d) ammeter
  26. 26.True or false: a circle with M inside is the symbol for a motor. (a) False (b) True
  27. 27.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) capacitor (b) junction (c) bulb (d) wire
  28. 28.Which drawing is the symbol for an ammeter? (a) a long and a short line (b) many long-short pairs (c) a circle with A inside (d) a small empty box
  29. 29.True or false: a line lifted at a gap is the symbol for an ammeter. (a) True (b) False
  30. 30.True or false: a plain rectangle is the symbol for a junction. (a) False (b) True
  31. 31.Which drawing is the symbol for a voltmeter? (a) a circle with M inside (b) a circle with V inside (c) a small empty box (d) a circle with a cross
  32. 32.True or false: a circle with A inside is the symbol for an LED. (a) True (b) False
  33. 33.True or false: one tall, one short bar is the symbol for a motor. (a) False (b) True
  34. 34.True or false: many long-short pairs is the symbol for a battery. (a) False (b) True
  35. 35.Which drawing is the symbol for a junction? (a) a circle with M inside (b) a dot where wires meet (c) a circle with A inside (d) a circle with a cross
  36. 36.Which drawing is the symbol for a bulb? (a) a straight line (b) triangle against a bar (c) one tall, one short bar (d) a circle with an X in it
  37. 37.Which drawing is the symbol for a switch? (a) many long-short pairs (b) two equal parallel lines (c) a plain rectangle (d) a line lifted at a gap
  38. 38.Which drawing is the symbol for a cell? (a) a circle with a cross (b) two or more cell symbols (c) a circle with M inside (d) one tall, one short bar
  39. 39.True or false: a line lifted at a gap is the symbol for a switch. (a) True (b) False
  40. 40.True or false: a circle with a cross is the symbol for a bulb. (a) False (b) True

Answer key

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

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