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Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 401 · 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 diode? (a) a circle with an X in it (b) triangle against a bar (c) a line lifted at a gap (d) a circle with V inside
  2. 2.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) both lines (c) the shorter line (d) the longer line
  3. 3.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) capacitor (b) junction (c) cell (d) ammeter
  4. 4.True or false: triangle against a bar is the symbol for a switch. (a) True (b) False
  5. 5.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) cell (b) bulb (c) battery (d) switch
  6. 6.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) little stars (c) straight lines (d) wavy lines
  7. 7.✏️ 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
  8. 8.True or false: a straight line is the symbol for a resistor. (a) False (b) True
  9. 9.Which drawing is the symbol for a capacitor? (a) two equal parallel lines (b) a circle with an X in it (c) many long-short pairs (d) one tall, one short bar
  10. 10.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) bulb (b) junction (c) switch (d) diode
  11. 11.True or false: a circle with M inside is the symbol for a diode. (a) True (b) False
  12. 12.True or false: a circle with M inside is the symbol for a motor. (a) True (b) False
  13. 13.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) capacitor (b) battery (c) bulb (d) resistor
  14. 14.True or false: two or more cell symbols is the symbol for a voltmeter. (a) False (b) True
  15. 15.True or false: triangle against a bar is the symbol for a cell. (a) True (b) False
  16. 16.Which drawing is the symbol for a bulb? (a) a long and a short line (b) triangle, bar and arrows (c) two or more cell symbols (d) a circle with a cross
  17. 17.True or false: a plain rectangle is the symbol for a resistor. (a) False (b) True
  18. 18.True or false: a circle with V inside is the symbol for a voltmeter. (a) True (b) False
  19. 19.True or false: a small empty box is the symbol for a resistor. (a) False (b) True
  20. 20.True or false: two or more cell symbols is the symbol for a battery. (a) True (b) False
  21. 21.Which drawing is the symbol for a switch? (a) a dot where wires meet (b) a line lifted at a gap (c) a circle with A inside (d) triangle against a bar
  22. 22.True or false: two equal parallel lines is the symbol for a bulb. (a) True (b) False
  23. 23.Which drawing is the symbol for a voltmeter? (a) a circle with V inside (b) two equal parallel lines (c) triangle, bar and arrows (d) a circle with an X in it
  24. 24.Which drawing is the symbol for a battery? (a) a small empty box (b) a circle with an X in it (c) many long-short pairs (d) a line lifted at a gap
  25. 25.True or false: a circle with A inside is the symbol for a bulb. (a) True (b) False
  26. 26.Which drawing is the symbol for a wire? (a) one tall, one short bar (b) a straight line (c) a circle with a cross (d) two equal parallel lines
  27. 27.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) LED (b) capacitor (c) motor (d) resistor
  28. 28.True or false: a straight line is the symbol for a bulb. (a) False (b) True
  29. 29.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) ammeter (b) switch (c) cell (d) LED
  30. 30.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) LED (b) junction (c) capacitor (d) switch
  31. 31.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) ammeter (b) resistor (c) bulb (d) battery
  32. 32.True or false: many long-short pairs is the symbol for a battery. (a) True (b) False
  33. 33.True or false: a circle with an X in it is the symbol for a battery. (a) True (b) False
  34. 34.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) motor (b) battery (c) junction (d) wire
  35. 35.True or false: two equal parallel lines is the symbol for a wire. (a) True (b) False
  36. 36.Which drawing is the symbol for a resistor? (a) a circle with an X in it (b) one tall, one short bar (c) a plain rectangle (d) two equal parallel lines
  37. 37.True or false: a dot where wires meet is the symbol for a cell. (a) True (b) False
  38. 38.True or false: a long and a short line is the symbol for a cell. (a) False (b) True
  39. 39.Which drawing is the symbol for a junction? (a) a dot where wires meet (b) many long-short pairs (c) a straight line (d) a circle with A inside
  40. 40.True or false: a line lifted at a gap is the symbol for a motor. (a) False (b) True

Answer key

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

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