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Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 829 · 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.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) bulb (b) motor (c) cell (d) resistor
  2. 2.True or false: a circle with a cross is the symbol for a diode. (a) True (b) False
  3. 3.True or false: one tall, one short bar is the symbol for a cell. (a) False (b) True
  4. 4.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) quick and clear for all (c) to make it colourful (d) to hide the circuit
  5. 5.True or false: two equal parallel lines is the symbol for a resistor. (a) True (b) False
  6. 6.Which drawing is the symbol for a switch? (a) two equal parallel lines (b) a line lifted at a gap (c) many long-short pairs (d) a circle with an X in it
  7. 7.Which drawing is the symbol for a motor? (a) a circle with a cross (b) a circle with M inside (c) one tall, one short bar (d) triangle, bar and arrows
  8. 8.True or false: two equal parallel lines is the symbol for a capacitor. (a) True (b) False
  9. 9.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) cell (b) battery (c) ammeter (d) switch
  10. 10.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) wire (b) bulb (c) diode (d) switch
  11. 11.Which drawing is the symbol for a voltmeter? (a) triangle against a bar (b) a circle with V inside (c) a line lifted at a gap (d) a dot where wires meet
  12. 12.Which drawing is the symbol for a junction? (a) a circle with a cross (b) one tall, one short bar (c) a dot where wires meet (d) many long-short pairs
  13. 13.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) both lines (c) the longer line (d) neither line
  14. 14.✏️ In a circuit diagram, which part is drawn as a straight line? (a) wire (b) bulb (c) voltmeter (d) battery
  15. 15.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) voltmeter (b) ammeter (c) diode (d) motor
  16. 16.Which drawing is the symbol for a cell? (a) a long and a short line (b) two equal parallel lines (c) a dot where wires meet (d) a circle with a cross
  17. 17.Which drawing is the symbol for a diode? (a) triangle against a bar (b) triangle, bar and arrows (c) a circle with A inside (d) two equal parallel lines
  18. 18.True or false: many long-short pairs is the symbol for a junction. (a) True (b) False
  19. 19.True or false: a small empty box is the symbol for a resistor. (a) True (b) False
  20. 20.True or false: a line lifted at a gap is the symbol for a capacitor. (a) False (b) True
  21. 21.Which drawing is the symbol for an LED? (a) a long and a short line (b) two equal parallel lines (c) triangle, bar and arrows (d) two or more cell symbols
  22. 22.True or false: a straight line is the symbol for a wire. (a) True (b) False
  23. 23.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) switch (b) motor (c) LED (d) battery
  24. 24.Which drawing is the symbol for a resistor? (a) a small empty box (b) two or more cell symbols (c) two equal parallel lines (d) a circle with M inside
  25. 25.True or false: a line lifted at a gap is the symbol for a resistor. (a) False (b) True
  26. 26.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) wavy lines (c) straight lines (d) dotted circles
  27. 27.True or false: a small empty box is the symbol for a cell. (a) True (b) False
  28. 28.True or false: a circle with V inside is the symbol for a voltmeter. (a) True (b) False
  29. 29.True or false: triangle against a bar is the symbol for an LED. (a) False (b) True
  30. 30.True or false: a dot where wires meet is the symbol for a capacitor. (a) False (b) True
  31. 31.Which drawing is the symbol for a wire? (a) a circle with a cross (b) a dot where wires meet (c) triangle, bar and arrows (d) a straight line
  32. 32.True or false: a plain rectangle is the symbol for a bulb. (a) False (b) True
  33. 33.Which drawing is the symbol for a battery? (a) a straight line (b) triangle against a bar (c) two or more cell symbols (d) a long and a short line
  34. 34.True or false: two or more cell symbols is the symbol for a battery. (a) False (b) True
  35. 35.True or false: two or more cell symbols is the symbol for a wire. (a) False (b) True
  36. 36.True or false: a small empty box is the symbol for a bulb. (a) False (b) True
  37. 37.True or false: triangle against a bar is the symbol for a diode. (a) True (b) False
  38. 38.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) capacitor (b) LED (c) voltmeter (d) bulb
  39. 39.True or false: a circle with a cross is the symbol for a bulb. (a) False (b) True
  40. 40.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) cell (b) junction (c) diode (d) capacitor

Answer key

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

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