Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 451 · 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 small empty box is the symbol for a switch. (a) True (b) False
2. 2.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) straight lines (c) dotted circles (d) little stars
3. 3.✏️ 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
4. 4.Which drawing is the symbol for a voltmeter? (a) a line lifted at a gap (b) a circle with M inside (c) a small empty box (d) a circle with V inside
5. 5.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) cell (b) battery (c) capacitor (d) junction
6. 6.True or false: one tall, one short bar is the symbol for a battery. (a) False (b) True
7. 7.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) battery (b) cell (c) resistor (d) bulb
8. 8.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) motor (b) diode (c) switch (d) resistor
9. 9.True or false: two or more cell symbols is the symbol for a bulb. (a) True (b) False
10. 10.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) junction (b) battery (c) bulb (d) capacitor
11. 11.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) neither line (c) the longer line (d) both lines
12. 12.True or false: a circle with a cross is the symbol for a bulb. (a) True (b) False
13. 13.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) wire (b) bulb (c) junction (d) battery
14. 14.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) battery (b) resistor (c) capacitor (d) motor
15. 15.Which drawing is the symbol for a wire? (a) a plain rectangle (b) a straight line (c) a small empty box (d) a dot where wires meet
16. 16.Which drawing is the symbol for a junction? (a) many long-short pairs (b) two equal parallel lines (c) a circle with M inside (d) a dot where wires meet
17. 17.Which drawing is the symbol for a capacitor? (a) two equal parallel lines (b) a circle with V inside (c) one tall, one short bar (d) a line lifted at a gap
18. 18.True or false: a plain rectangle is the symbol for a resistor. (a) False (b) True
19. 19.Which drawing is the symbol for a bulb? (a) a straight line (b) triangle against a bar (c) a circle with an X in it (d) a long and a short line
20. 20.Which drawing is the symbol for a bulb? (a) triangle against a bar (b) a circle with a cross (c) a straight line (d) a circle with V inside
21. 21.True or false: many long-short pairs is the symbol for a wire. (a) False (b) True
22. 22.True or false: a straight line is the symbol for a wire. (a) True (b) False
23. 23.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) LED (b) resistor (c) cell (d) junction
24. 24.✏️ In a circuit diagram, which part is drawn as a straight line? (a) capacitor (b) junction (c) bulb (d) wire
25. 25.Which drawing is the symbol for an ammeter? (a) a small empty box (b) a circle with A inside (c) one tall, one short bar (d) two or more cell symbols
26. 26.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) battery (b) resistor (c) diode (d) wire
27. 27.True or false: one tall, one short bar is the symbol for a wire. (a) True (b) False
28. 28.True or false: a circle with M inside is the symbol for a battery. (a) False (b) True
29. 29.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) bulb (b) wire (c) capacitor (d) battery
30. 30.True or false: many long-short pairs is the symbol for a resistor. (a) True (b) False
31. 31.Which drawing is the symbol for an LED? (a) triangle, bar and arrows (b) a circle with A inside (c) two equal parallel lines (d) a circle with M inside
32. 32.Which drawing is the symbol for a motor? (a) a circle with A inside (b) a circle with M inside (c) two or more cell symbols (d) triangle against a bar
33. 33.True or false: a circle with M inside is the symbol for an ammeter. (a) False (b) True
34. 34.True or false: a straight line is the symbol for a capacitor. (a) True (b) False
35. 35.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) wire (b) capacitor (c) switch (d) cell
36. 36.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) cell (b) voltmeter (c) resistor (d) diode
37. 37.True or false: triangle against a bar is the symbol for a diode. (a) True (b) False
38. 38.True or false: a circle with a cross is the symbol for a battery. (a) True (b) False
39. 39.True or false: a circle with a cross is the symbol for a wire. (a) True (b) False
40. 40.True or false: a long and a short line is the symbol for a resistor. (a) False (b) True

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