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Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 413 · 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 capacitor? (a) one tall, one short bar (b) a circle with M inside (c) a dot where wires meet (d) two equal parallel lines
  2. 2.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) symbols are heavier (c) to hide the circuit (d) quick and clear for all
  3. 3.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) both lines (c) the longer line (d) neither line
  4. 4.True or false: a plain rectangle is the symbol for a resistor. (a) True (b) False
  5. 5.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) diode (b) voltmeter (c) motor (d) battery
  6. 6.True or false: a circle with an X in it is the symbol for a bulb. (a) True (b) False
  7. 7.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) LED (b) voltmeter (c) diode (d) battery
  8. 8.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) bulb (b) ammeter (c) cell (d) resistor
  9. 9.✏️ In a circuit diagram, which part is drawn as a straight line? (a) junction (b) ammeter (c) wire (d) bulb
  10. 10.Which drawing is the symbol for a resistor? (a) one tall, one short bar (b) a circle with A inside (c) a circle with a cross (d) a plain rectangle
  11. 11.True or false: many long-short pairs is the symbol for a diode. (a) False (b) True
  12. 12.Which drawing is the symbol for a junction? (a) a straight line (b) two equal parallel lines (c) a plain rectangle (d) a dot where wires meet
  13. 13.True or false: triangle, bar and arrows is the symbol for a battery. (a) False (b) True
  14. 14.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) straight lines (c) wavy lines (d) dotted circles
  15. 15.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) diode (b) junction (c) switch (d) voltmeter
  16. 16.True or false: two or more cell symbols is the symbol for a bulb. (a) False (b) True
  17. 17.True or false: a circle with a cross is the symbol for a diode. (a) False (b) True
  18. 18.Which drawing is the symbol for a cell? (a) a line lifted at a gap (b) a straight line (c) two equal parallel lines (d) a long and a short line
  19. 19.True or false: two equal parallel lines is the symbol for a wire. (a) False (b) True
  20. 20.True or false: a small empty box is the symbol for a wire. (a) True (b) False
  21. 21.True or false: two or more cell symbols is the symbol for a switch. (a) False (b) True
  22. 22.True or false: a circle with A inside is the symbol for an ammeter. (a) True (b) False
  23. 23.True or false: one tall, one short bar is the symbol for a battery. (a) True (b) False
  24. 24.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) bulb (b) ammeter (c) resistor (d) capacitor
  25. 25.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) ammeter (b) battery (c) junction (d) cell
  26. 26.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) motor (b) voltmeter (c) capacitor (d) resistor
  27. 27.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) cell (b) bulb (c) switch (d) voltmeter
  28. 28.True or false: a circle with a cross is the symbol for a wire. (a) True (b) False
  29. 29.Which drawing is the symbol for a diode? (a) triangle against a bar (b) a dot where wires meet (c) one tall, one short bar (d) a plain rectangle
  30. 30.Which drawing is the symbol for a battery? (a) a circle with M inside (b) a circle with an X in it (c) triangle against a bar (d) two or more cell symbols
  31. 31.True or false: many long-short pairs is the symbol for a switch. (a) False (b) True
  32. 32.Which drawing is the symbol for a voltmeter? (a) a long and a short line (b) a circle with V inside (c) two or more cell symbols (d) triangle against a bar
  33. 33.Which drawing is the symbol for a cell? (a) one tall, one short bar (b) a line lifted at a gap (c) a dot where wires meet (d) a straight line
  34. 34.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) switch (b) cell (c) resistor (d) battery
  35. 35.True or false: a circle with a cross is the symbol for a bulb. (a) False (b) True
  36. 36.True or false: a dot where wires meet is the symbol for an LED. (a) True (b) False
  37. 37.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) junction (b) switch (c) motor (d) diode
  38. 38.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) ammeter (b) wire (c) battery (d) voltmeter
  39. 39.True or false: a circle with M inside is the symbol for a switch. (a) True (b) False
  40. 40.True or false: a long and a short line is the symbol for a junction. (a) True (b) False

Answer key

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

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