Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 748 · 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.Which drawing is the symbol for a bulb? (a) a dot where wires meet (b) a circle with M inside (c) a circle with an X in it (d) a circle with V inside
2. 2.Which drawing is the symbol for a capacitor? (a) triangle against a bar (b) triangle, bar and arrows (c) two equal parallel lines (d) a circle with A inside
3. 3.True or false: a circle with an X in it is the symbol for a bulb. (a) True (b) False
4. 4.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) to hide the circuit (c) quick and clear for all (d) symbols are heavier
5. 5.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) capacitor (b) diode (c) cell (d) voltmeter
6. 6.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) battery (b) diode (c) motor (d) ammeter
7. 7.Which drawing is the symbol for a wire? (a) a small empty box (b) a circle with M inside (c) a straight line (d) two or more cell symbols
8. 8.✏️ In a circuit diagram, which part is drawn as a straight line? (a) motor (b) wire (c) voltmeter (d) diode
9. 9.True or false: a straight line is the symbol for a bulb. (a) True (b) False
10. 10.Which drawing is the symbol for a diode? (a) a circle with a cross (b) a circle with V inside (c) triangle against a bar (d) a circle with A inside
11. 11.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) bulb (b) wire (c) battery (d) junction
12. 12.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) capacitor (b) battery (c) voltmeter (d) motor
13. 13.Which drawing is the symbol for a voltmeter? (a) two equal parallel lines (b) a long and a short line (c) a circle with V inside (d) a circle with a cross
14. 14.True or false: a circle with M inside is the symbol for a motor. (a) True (b) False
15. 15.Which drawing is the symbol for a motor? (a) a line lifted at a gap (b) a circle with M inside (c) two or more cell symbols (d) a circle with V inside
16. 16.True or false: a plain rectangle 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) True (b) False
18. 18.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) capacitor (b) voltmeter (c) switch (d) battery
19. 19.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) wavy lines (c) straight lines (d) dotted circles
20. 20.True or false: two or more cell symbols is the symbol for a wire. (a) True (b) False
21. 21.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) the shorter line (c) both lines (d) the longer line
22. 22.Which drawing is the symbol for an ammeter? (a) two or more cell symbols (b) a circle with a cross (c) a circle with A inside (d) a plain rectangle
23. 23.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) diode (b) junction (c) ammeter (d) bulb
24. 24.True or false: triangle against a bar is the symbol for a diode. (a) False (b) True
25. 25.True or false: two or more cell symbols is the symbol for a battery. (a) True (b) False
26. 26.Which drawing is the symbol for a battery? (a) a plain rectangle (b) two or more cell symbols (c) a circle with V inside (d) a circle with M inside
27. 27.Which drawing is the symbol for a resistor? (a) one tall, one short bar (b) a plain rectangle (c) two or more cell symbols (d) a dot where wires meet
28. 28.Which drawing is the symbol for a cell? (a) a small empty box (b) a long and a short line (c) a circle with M inside (d) a plain rectangle
29. 29.True or false: two equal parallel lines is the symbol for a resistor. (a) True (b) False
30. 30.True or false: a small empty box is the symbol for a wire. (a) True (b) False
31. 31.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) resistor (b) ammeter (c) LED (d) bulb
32. 32.True or false: a straight line is the symbol for a capacitor. (a) False (b) True
33. 33.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) diode (b) cell (c) junction (d) voltmeter
34. 34.True or false: many long-short pairs is the symbol for a diode. (a) False (b) True
35. 35.True or false: a small empty box is the symbol for a battery. (a) True (b) False
36. 36.Which drawing is the symbol for a battery? (a) many long-short pairs (b) triangle against a bar (c) a small empty box (d) two equal parallel lines
37. 37.True or false: a plain rectangle is the symbol for a diode. (a) True (b) False
38. 38.True or false: a small empty box is the symbol for a resistor. (a) True (b) False
39. 39.True or false: a dot where wires meet is the symbol for a junction. (a) True (b) False
40. 40.True or false: a circle with M inside is the symbol for a capacitor. (a) False (b) True

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