Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 618 · 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 circle with M inside (b) a circle with an X in it (c) a long and a short line (d) a straight line
2. 2.True or false: triangle, bar and arrows is the symbol for a junction. (a) True (b) False
3. 3.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) bulb (b) LED (c) capacitor (d) battery
4. 4.Which drawing is the symbol for an LED? (a) triangle, bar and arrows (b) a dot where wires meet (c) a circle with A inside (d) a circle with V inside
5. 5.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) little stars (c) wavy lines (d) straight lines
6. 6.Which drawing is the symbol for a cell? (a) a long and a short line (b) a small empty box (c) a circle with an X in it (d) a circle with M inside
7. 7.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) quick and clear for all (c) to make it colourful (d) symbols are heavier
8. 8.Which drawing is the symbol for a junction? (a) a dot where wires meet (b) a line lifted at a gap (c) a plain rectangle (d) one tall, one short bar
9. 9.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) cell (b) junction (c) diode (d) capacitor
10. 10.Which drawing is the symbol for a wire? (a) a straight line (b) a circle with a cross (c) one tall, one short bar (d) a circle with M inside
11. 11.Which drawing is the symbol for a resistor? (a) a long and a short line (b) a circle with A inside (c) a small empty box (d) many long-short pairs
12. 12.True or false: a line lifted at a gap is the symbol for a wire. (a) False (b) True
13. 13.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) cell (b) wire (c) battery (d) bulb
14. 14.True or false: a circle with an X in it is the symbol for a bulb. (a) False (b) True
15. 15.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) motor (b) voltmeter (c) switch (d) diode
16. 16.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) diode (b) voltmeter (c) battery (d) ammeter
17. 17.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) neither line (c) the shorter line (d) the longer line
18. 18.True or false: many long-short pairs is the symbol for a battery. (a) True (b) False
19. 19.True or false: a circle with an X in it is the symbol for a resistor. (a) False (b) True
20. 20.True or false: a small empty box is the symbol for a resistor. (a) True (b) False
21. 21.Which drawing is the symbol for a battery? (a) one tall, one short bar (b) a small empty box (c) triangle against a bar (d) many long-short pairs
22. 22.Which drawing is the symbol for a resistor? (a) many long-short pairs (b) a circle with an X in it (c) a plain rectangle (d) triangle, bar and arrows
23. 23.True or false: a line lifted at a gap is the symbol for a switch. (a) True (b) False
24. 24.True or false: triangle, bar and arrows is the symbol for a cell. (a) True (b) False
25. 25.True or false: a small empty box is the symbol for a voltmeter. (a) False (b) True
26. 26.Which drawing is the symbol for a voltmeter? (a) a straight line (b) many long-short pairs (c) a circle with V inside (d) triangle against a bar
27. 27.True or false: a long and a short line is the symbol for a cell. (a) False (b) True
28. 28.True or false: a dot where wires meet is the symbol for a resistor. (a) True (b) False
29. 29.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) bulb (b) cell (c) wire (d) battery
30. 30.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) diode (b) resistor (c) wire (d) capacitor
31. 31.Which drawing is the symbol for a bulb? (a) a long and a short line (b) a dot where wires meet (c) one tall, one short bar (d) a circle with a cross
32. 32.Which drawing is the symbol for a capacitor? (a) a long and a short line (b) two equal parallel lines (c) triangle, bar and arrows (d) a circle with a cross
33. 33.True or false: two or more cell symbols is the symbol for a resistor. (a) False (b) True
34. 34.True or false: a circle with V inside is the symbol for a cell. (a) True (b) False
35. 35.True or false: a circle with an X in it is the symbol for a cell. (a) False (b) True
36. 36.Which drawing is the symbol for a diode? (a) a circle with a cross (b) a line lifted at a gap (c) a long and a short line (d) triangle against a bar
37. 37.✏️ In a circuit diagram, which part is drawn as a straight line? (a) wire (b) motor (c) capacitor (d) ammeter
38. 38.True or false: a circle with A inside is the symbol for an ammeter. (a) False (b) True
39. 39.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) motor (b) diode (c) cell (d) bulb
40. 40.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) voltmeter (b) cell (c) resistor (d) LED

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