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Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 174 · 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.✏️ 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
  2. 2.True or false: a straight line is the symbol for a wire. (a) True (b) False
  3. 3.True or false: a circle with A inside is the symbol for an ammeter. (a) True (b) False
  4. 4.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) cell (b) resistor (c) battery (d) capacitor
  5. 5.Which drawing is the symbol for a capacitor? (a) a plain rectangle (b) a circle with a cross (c) two equal parallel lines (d) a long and a short line
  6. 6.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) straight lines (c) wavy lines (d) little stars
  7. 7.True or false: a circle with a cross is the symbol for an LED. (a) True (b) False
  8. 8.Which drawing is the symbol for a resistor? (a) a line lifted at a gap (b) a small empty box (c) one tall, one short bar (d) a circle with V inside
  9. 9.True or false: triangle against a bar is the symbol for a diode. (a) True (b) False
  10. 10.True or false: a straight line is the symbol for a bulb. (a) True (b) False
  11. 11.Which drawing is the symbol for a battery? (a) one tall, one short bar (b) a circle with A inside (c) a circle with M inside (d) many long-short pairs
  12. 12.True or false: a small empty box is the symbol for a resistor. (a) True (b) False
  13. 13.Which drawing is the symbol for a motor? (a) a circle with M inside (b) two or more cell symbols (c) a circle with V inside (d) a circle with A inside
  14. 14.True or false: a dot where wires meet is the symbol for an LED. (a) True (b) False
  15. 15.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) battery (b) LED (c) resistor (d) motor
  16. 16.True or false: a plain rectangle is the symbol for a battery. (a) True (b) False
  17. 17.True or false: a straight line is the symbol for a junction. (a) True (b) False
  18. 18.True or false: a plain rectangle is the symbol for a resistor. (a) True (b) False
  19. 19.True or false: triangle, bar and arrows is the symbol for an LED. (a) True (b) False
  20. 20.Which drawing is the symbol for a bulb? (a) triangle against a bar (b) a line lifted at a gap (c) a plain rectangle (d) a circle with a cross
  21. 21.Which drawing is the symbol for a voltmeter? (a) a circle with V inside (b) triangle, bar and arrows (c) a dot where wires meet (d) a circle with M inside
  22. 22.True or false: triangle against a bar is the symbol for a resistor. (a) True (b) False
  23. 23.Which drawing is the symbol for a cell? (a) a circle with V inside (b) a small empty box (c) one tall, one short bar (d) two equal parallel lines
  24. 24.True or false: two or more cell symbols is the symbol for a battery. (a) False (b) True
  25. 25.True or false: triangle against a bar is the symbol for a junction. (a) True (b) False
  26. 26.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) ammeter (b) wire (c) switch (d) cell
  27. 27.True or false: a long and a short line is the symbol for a cell. (a) False (b) True
  28. 28.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) the longer line (c) neither line (d) both lines
  29. 29.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) switch (b) voltmeter (c) resistor (d) LED
  30. 30.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) LED (b) battery (c) resistor (d) cell
  31. 31.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) LED (b) voltmeter (c) ammeter (d) diode
  32. 32.True or false: a straight line is the symbol for an ammeter. (a) False (b) True
  33. 33.True or false: a circle with an X in it is the symbol for a capacitor. (a) False (b) True
  34. 34.True or false: a plain rectangle is the symbol for a capacitor. (a) False (b) True
  35. 35.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) LED (b) capacitor (c) voltmeter (d) battery
  36. 36.True or false: a circle with an X in it is the symbol for an ammeter. (a) True (b) False
  37. 37.True or false: a circle with an X in it is the symbol for a bulb. (a) False (b) True
  38. 38.Which drawing is the symbol for a resistor? (a) a circle with V inside (b) a plain rectangle (c) triangle against a bar (d) a dot where wires meet
  39. 39.Which drawing is the symbol for an ammeter? (a) two or more cell symbols (b) triangle against a bar (c) a small empty box (d) a circle with A inside
  40. 40.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) ammeter (b) diode (c) switch (d) cell

Answer key

  1. quick and clear for all
  2. True
  3. True
  4. capacitor
  5. two equal parallel lines
  6. straight lines
  7. False
  8. a small empty box
  9. True
  10. False
  11. many long-short pairs
  12. True
  13. a circle with M inside
  14. False
  15. battery
  16. False
  17. False
  18. True
  19. True
  20. a circle with a cross
  21. a circle with V inside
  22. False
  23. one tall, one short bar
  24. True
  25. False
  26. switch
  27. True
  28. the longer line
  29. voltmeter
  30. cell
  31. LED
  32. False
  33. False
  34. False
  35. battery
  36. False
  37. True
  38. a plain rectangle
  39. a circle with A inside
  40. ammeter

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