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Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 166 · 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 cell symbol, which line is the + terminal? (a) the longer line (b) neither line (c) the shorter line (d) both lines
  2. 2.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) voltmeter (b) bulb (c) cell (d) wire
  3. 3.Which drawing is the symbol for a resistor? (a) a circle with V inside (b) a long and a short line (c) a circle with an X in it (d) a small empty box
  4. 4.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) resistor (b) battery (c) bulb (d) diode
  5. 5.Which drawing is the symbol for a junction? (a) a dot where wires meet (b) two or more cell symbols (c) a line lifted at a gap (d) many long-short pairs
  6. 6.True or false: a circle with an X in it is the symbol for a bulb. (a) False (b) True
  7. 7.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) wavy lines (c) little stars (d) straight lines
  8. 8.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) battery (b) bulb (c) voltmeter (d) LED
  9. 9.True or false: a circle with a cross is the symbol for a wire. (a) False (b) True
  10. 10.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) ammeter (b) cell (c) resistor (d) diode
  11. 11.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) junction (b) resistor (c) switch (d) battery
  12. 12.True or false: many long-short pairs is the symbol for a resistor. (a) True (b) False
  13. 13.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) diode (b) battery (c) switch (d) wire
  14. 14.True or false: a circle with a cross is the symbol for a bulb. (a) False (b) True
  15. 15.True or false: triangle, bar and arrows is the symbol for a diode. (a) True (b) False
  16. 16.Which drawing is the symbol for a switch? (a) a line lifted at a gap (b) a small empty box (c) a circle with V inside (d) a straight line
  17. 17.True or false: a straight line is the symbol for a motor. (a) False (b) True
  18. 18.True or false: a circle with M inside is the symbol for a bulb. (a) True (b) False
  19. 19.True or false: a circle with an X in it is the symbol for a switch. (a) False (b) True
  20. 20.Which drawing is the symbol for a cell? (a) many long-short pairs (b) a circle with M inside (c) a long and a short line (d) triangle, bar and arrows
  21. 21.Which drawing is the symbol for a voltmeter? (a) many long-short pairs (b) a circle with V inside (c) one tall, one short bar (d) a dot where wires meet
  22. 22.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) battery (b) LED (c) diode (d) capacitor
  23. 23.True or false: a circle with A inside is the symbol for an LED. (a) False (b) True
  24. 24.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) capacitor (b) switch (c) voltmeter (d) ammeter
  25. 25.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) capacitor (b) voltmeter (c) motor (d) resistor
  26. 26.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) symbols are heavier (c) to make it colourful (d) to hide the circuit
  27. 27.True or false: a circle with V inside is the symbol for an LED. (a) False (b) True
  28. 28.Which drawing is the symbol for an ammeter? (a) one tall, one short bar (b) two or more cell symbols (c) a circle with A inside (d) a circle with M inside
  29. 29.True or false: a circle with an X in it is the symbol for a cell. (a) True (b) False
  30. 30.Which drawing is the symbol for a motor? (a) a circle with A inside (b) many long-short pairs (c) one tall, one short bar (d) a circle with M inside
  31. 31.Which drawing is the symbol for a capacitor? (a) a line lifted at a gap (b) a circle with a cross (c) a circle with M inside (d) two equal parallel lines
  32. 32.True or false: a line lifted at a gap is the symbol for a switch. (a) True (b) False
  33. 33.Which drawing is the symbol for a battery? (a) a dot where wires meet (b) a circle with M inside (c) triangle, bar and arrows (d) many long-short pairs
  34. 34.True or false: a long and a short line is the symbol for a cell. (a) True (b) False
  35. 35.True or false: two or more cell symbols is the symbol for a capacitor. (a) False (b) True
  36. 36.True or false: many long-short pairs is the symbol for a bulb. (a) True (b) False
  37. 37.True or false: two or more cell symbols is the symbol for a battery. (a) False (b) True
  38. 38.True or false: a circle with A inside is the symbol for a resistor. (a) False (b) True
  39. 39.True or false: a circle with a cross is the symbol for a cell. (a) False (b) True
  40. 40.True or false: a plain rectangle is the symbol for a resistor. (a) False (b) True

Answer key

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

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