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Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 246 · 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 plain rectangle is the symbol for a junction. (a) True (b) False
  2. 2.Which drawing is the symbol for a capacitor? (a) two equal parallel lines (b) a circle with V inside (c) a long and a short line (d) a circle with M inside
  3. 3.Which drawing is the symbol for a diode? (a) two equal parallel lines (b) a long and a short line (c) triangle against a bar (d) a circle with M inside
  4. 4.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) resistor (b) cell (c) battery (d) capacitor
  5. 5.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) little stars (c) straight lines (d) dotted circles
  6. 6.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) neither line (c) both lines (d) the shorter line
  7. 7.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) wire (b) LED (c) battery (d) resistor
  8. 8.True or false: a circle with a cross is the symbol for a bulb. (a) False (b) True
  9. 9.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) switch (b) cell (c) ammeter (d) motor
  10. 10.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) diode (b) voltmeter (c) LED (d) junction
  11. 11.True or false: a small empty box is the symbol for a resistor. (a) False (b) True
  12. 12.Which drawing is the symbol for a battery? (a) a circle with M inside (b) a circle with a cross (c) many long-short pairs (d) a circle with V inside
  13. 13.True or false: a circle with a cross is the symbol for a motor. (a) True (b) False
  14. 14.Which drawing is the symbol for a wire? (a) two or more cell symbols (b) many long-short pairs (c) a small empty box (d) a straight line
  15. 15.True or false: a circle with an X in it is the symbol for a cell. (a) False (b) True
  16. 16.True or false: a small empty box is the symbol for an LED. (a) False (b) True
  17. 17.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) switch (b) bulb (c) battery (d) resistor
  18. 18.True or false: many long-short pairs is the symbol for a battery. (a) False (b) True
  19. 19.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) to make it colourful (c) quick and clear for all (d) to hide the circuit
  20. 20.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) voltmeter (b) bulb (c) cell (d) resistor
  21. 21.True or false: a circle with M inside is the symbol for a capacitor. (a) True (b) False
  22. 22.True or false: a line lifted at a gap is the symbol for a voltmeter. (a) False (b) True
  23. 23.True or false: a line lifted at a gap is the symbol for a switch. (a) False (b) True
  24. 24.Which drawing is the symbol for a resistor? (a) a long and a short line (b) a line lifted at a gap (c) a circle with a cross (d) a small empty box
  25. 25.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) cell (b) ammeter (c) LED (d) battery
  26. 26.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) resistor (b) battery (c) switch (d) bulb
  27. 27.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) ammeter (b) diode (c) battery (d) LED
  28. 28.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) LED (b) motor (c) resistor (d) diode
  29. 29.True or false: a circle with A inside is the symbol for an LED. (a) False (b) True
  30. 30.True or false: a circle with A inside is the symbol for a bulb. (a) True (b) False
  31. 31.True or false: triangle, bar and arrows is the symbol for a bulb. (a) True (b) False
  32. 32.Which drawing is the symbol for a junction? (a) many long-short pairs (b) a dot where wires meet (c) a long and a short line (d) two or more cell symbols
  33. 33.✏️ In a circuit diagram, which part is drawn as a straight line? (a) wire (b) bulb (c) switch (d) voltmeter
  34. 34.True or false: a dot where wires meet is the symbol for a resistor. (a) True (b) False
  35. 35.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) diode (b) resistor (c) LED (d) voltmeter
  36. 36.True or false: a long and a short line is the symbol for a voltmeter. (a) True (b) False
  37. 37.Which drawing is the symbol for a motor? (a) triangle against a bar (b) a long and a short line (c) two or more cell symbols (d) a circle with M inside
  38. 38.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) cell (b) wire (c) bulb (d) switch
  39. 39.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) battery (b) diode (c) switch (d) wire
  40. 40.Which drawing is the symbol for an ammeter? (a) triangle, bar and arrows (b) triangle against a bar (c) one tall, one short bar (d) a circle with A inside

Answer key

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

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