← Circuit symbols lesson New set →

Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 403 · 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.

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

Answer key

  1. straight lines
  2. one tall, one short bar
  3. LED
  4. a circle with M inside
  5. quick and clear for all
  6. True
  7. False
  8. the longer line
  9. battery
  10. True
  11. False
  12. False
  13. False
  14. False
  15. resistor
  16. True
  17. a line lifted at a gap
  18. True
  19. False
  20. triangle, bar and arrows
  21. False
  22. triangle against a bar
  23. cell
  24. bulb
  25. a circle with V inside
  26. False
  27. True
  28. ammeter
  29. resistor
  30. voltmeter
  31. bulb
  32. a dot where wires meet
  33. True
  34. two equal parallel lines
  35. False
  36. a straight line
  37. False
  38. junction
  39. True
  40. a circle with an X in it

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids