Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 901 · 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.True or false: a dot where wires meet is the symbol for a bulb. (a) True (b) False
2. 2.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) to hide the circuit (c) symbols are heavier (d) quick and clear for all
3. 3.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) neither line (c) both lines (d) the longer line
4. 4.Which drawing is the symbol for an LED? (a) triangle, bar and arrows (b) a circle with a cross (c) a plain rectangle (d) a circle with A inside
5. 5.Which drawing is the symbol for a junction? (a) a dot where wires meet (b) a circle with A inside (c) a line lifted at a gap (d) a circle with a cross
6. 6.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) junction (b) bulb (c) voltmeter (d) capacitor
7. 7.Which drawing is the symbol for a switch? (a) a long and a short line (b) a circle with an X in it (c) a line lifted at a gap (d) a circle with M inside
8. 8.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) little stars (c) wavy lines (d) straight lines
9. 9.True or false: a plain rectangle is the symbol for a resistor. (a) True (b) False
10. 10.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) bulb (b) wire (c) LED (d) cell
11. 11.True or false: a circle with M inside is the symbol for a resistor. (a) True (b) False
12. 12.✏️ In a circuit diagram, which part is drawn as a straight line? (a) capacitor (b) resistor (c) battery (d) wire
13. 13.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) motor (b) ammeter (c) resistor (d) switch
14. 14.Which drawing is the symbol for a cell? (a) triangle against a bar (b) a circle with a cross (c) two equal parallel lines (d) a long and a short line
15. 15.True or false: a circle with A inside is the symbol for a capacitor. (a) True (b) False
16. 16.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) cell (b) bulb (c) ammeter (d) junction
17. 17.Which drawing is the symbol for a resistor? (a) a dot where wires meet (b) a circle with a cross (c) a plain rectangle (d) a circle with V inside
18. 18.Which drawing is the symbol for a bulb? (a) a circle with M inside (b) a circle with a cross (c) a long and a short line (d) a line lifted at a gap
19. 19.Which drawing is the symbol for a battery? (a) two equal parallel lines (b) a circle with an X in it (c) a line lifted at a gap (d) many long-short pairs
20. 20.True or false: many long-short pairs is the symbol for a wire. (a) False (b) True
21. 21.Which drawing is the symbol for a battery? (a) a straight line (b) triangle, bar and arrows (c) a long and a short line (d) two or more cell symbols
22. 22.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) cell (b) resistor (c) capacitor (d) battery
23. 23.True or false: a straight line is the symbol for a battery. (a) False (b) True
24. 24.True or false: triangle against a bar is the symbol for a diode. (a) True (b) False
25. 25.True or false: a circle with an X in it is the symbol for a bulb. (a) False (b) True
26. 26.True or false: a straight line is the symbol for a wire. (a) False (b) True
27. 27.True or false: a circle with a cross is the symbol for a capacitor. (a) True (b) False
28. 28.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) switch (b) voltmeter (c) resistor (d) wire
29. 29.Which drawing is the symbol for a capacitor? (a) a dot where wires meet (b) a circle with V inside (c) many long-short pairs (d) two equal parallel lines
30. 30.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) junction (b) battery (c) voltmeter (d) LED
31. 31.True or false: a circle with A inside is the symbol for an ammeter. (a) False (b) True
32. 32.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) voltmeter (b) motor (c) switch (d) capacitor
33. 33.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) wire (b) bulb (c) junction (d) diode
34. 34.Which drawing is the symbol for a cell? (a) one tall, one short bar (b) two equal parallel lines (c) a small empty box (d) a line lifted at a gap
35. 35.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) capacitor (b) battery (c) ammeter (d) diode
36. 36.True or false: one tall, one short bar is the symbol for a cell. (a) False (b) True
37. 37.Which drawing is the symbol for a resistor? (a) two equal parallel lines (b) a circle with a cross (c) a small empty box (d) a dot where wires meet
38. 38.Which drawing is the symbol for a diode? (a) a circle with a cross (b) two or more cell symbols (c) triangle against a bar (d) a plain rectangle
39. 39.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) bulb (b) ammeter (c) motor (d) diode
40. 40.True or false: a long and a short line is the symbol for a cell. (a) False (b) True

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