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Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 937 · 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: one tall, one short bar is the symbol for a motor. (a) True (b) False
  2. 2.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) ammeter (b) motor (c) LED (d) wire
  3. 3.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) switch (b) voltmeter (c) LED (d) motor
  4. 4.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) symbols are heavier (c) quick and clear for all (d) to make it colourful
  5. 5.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) motor (b) bulb (c) resistor (d) wire
  6. 6.True or false: a small empty box is the symbol for a bulb. (a) False (b) True
  7. 7.Which drawing is the symbol for a bulb? (a) a circle with an X in it (b) a long and a short line (c) a line lifted at a gap (d) a dot where wires meet
  8. 8.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) diode (b) bulb (c) resistor (d) voltmeter
  9. 9.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) both lines (c) the shorter line (d) the longer line
  10. 10.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) straight lines (c) dotted circles (d) wavy lines
  11. 11.Which drawing is the symbol for an ammeter? (a) one tall, one short bar (b) a small empty box (c) two or more cell symbols (d) a circle with A inside
  12. 12.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) diode (b) bulb (c) cell (d) junction
  13. 13.Which drawing is the symbol for a resistor? (a) two or more cell symbols (b) two equal parallel lines (c) a dot where wires meet (d) a small empty box
  14. 14.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) ammeter (b) capacitor (c) diode (d) bulb
  15. 15.True or false: a circle with V inside is the symbol for a battery. (a) True (b) False
  16. 16.True or false: a circle with a cross is the symbol for a capacitor. (a) True (b) False
  17. 17.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) motor (b) capacitor (c) diode (d) cell
  18. 18.True or false: a straight line is the symbol for a cell. (a) True (b) False
  19. 19.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) diode (b) motor (c) wire (d) cell
  20. 20.True or false: one tall, one short bar is the symbol for an LED. (a) True (b) False
  21. 21.True or false: a long and a short line is the symbol for a cell. (a) True (b) False
  22. 22.True or false: a straight line is the symbol for a capacitor. (a) False (b) True
  23. 23.Which drawing is the symbol for a wire? (a) a line lifted at a gap (b) a small empty box (c) a circle with A inside (d) a straight line
  24. 24.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) switch (b) resistor (c) capacitor (d) voltmeter
  25. 25.True or false: a circle with M inside is the symbol for a battery. (a) True (b) False
  26. 26.True or false: many long-short pairs is the symbol for a switch. (a) True (b) False
  27. 27.True or false: a dot where wires meet is the symbol for a wire. (a) False (b) True
  28. 28.Which drawing is the symbol for a capacitor? (a) a circle with an X in it (b) triangle, bar and arrows (c) many long-short pairs (d) two equal parallel lines
  29. 29.True or false: two equal parallel lines is the symbol for a switch. (a) True (b) False
  30. 30.True or false: a small empty box is the symbol for a voltmeter. (a) False (b) True
  31. 31.Which drawing is the symbol for a voltmeter? (a) a plain rectangle (b) a circle with a cross (c) a circle with V inside (d) a circle with an X in it
  32. 32.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) battery (b) wire (c) LED (d) switch
  33. 33.True or false: a dot where wires meet is the symbol for a junction. (a) True (b) False
  34. 34.True or false: a dot where wires meet is the symbol for a battery. (a) True (b) False
  35. 35.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) wire (b) bulb (c) motor (d) ammeter
  36. 36.Which drawing is the symbol for a resistor? (a) triangle, bar and arrows (b) a circle with a cross (c) many long-short pairs (d) a plain rectangle
  37. 37.Which drawing is the symbol for a diode? (a) a long and a short line (b) a circle with M inside (c) triangle against a bar (d) a line lifted at a gap
  38. 38.True or false: a circle with A inside is the symbol for a capacitor. (a) True (b) False
  39. 39.Which drawing is the symbol for an LED? (a) a circle with V inside (b) a circle with A inside (c) one tall, one short bar (d) triangle, bar and arrows
  40. 40.True or false: triangle, bar and arrows is the symbol for an LED. (a) False (b) True

Answer key

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

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