Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 349 · 40 questions

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.

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

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