Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 406 · 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: triangle, bar and arrows is the symbol for a switch. (a) True (b) False
2. 2.True or false: two or more cell symbols is the symbol for an LED. (a) True (b) False
3. 3.Which drawing is the symbol for a battery? (a) a small empty box (b) triangle against a bar (c) one tall, one short bar (d) many long-short pairs
4. 4.Which drawing is the symbol for an ammeter? (a) many long-short pairs (b) triangle, bar and arrows (c) a circle with A inside (d) triangle against a bar
5. 5.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) little stars (c) straight lines (d) wavy lines
6. 6.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) capacitor (b) junction (c) wire (d) cell
7. 7.True or false: triangle, bar and arrows is the symbol for an LED. (a) False (b) True
8. 8.True or false: triangle against a bar is the symbol for a diode. (a) False (b) True
9. 9.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) junction (b) resistor (c) bulb (d) switch
10. 10.Which drawing is the symbol for an LED? (a) a circle with M inside (b) two equal parallel lines (c) triangle, bar and arrows (d) a straight line
11. 11.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) the shorter line (c) the longer line (d) both lines
12. 12.Which drawing is the symbol for a resistor? (a) a plain rectangle (b) triangle, bar and arrows (c) a circle with a cross (d) a long and a short line
13. 13.Which drawing is the symbol for a motor? (a) a straight line (b) a plain rectangle (c) a circle with V inside (d) a circle with M inside
14. 14.True or false: triangle against a bar is the symbol for a motor. (a) False (b) True
15. 15.True or false: a circle with an X in it is the symbol for an ammeter. (a) True (b) False
16. 16.True or false: triangle against a bar is the symbol for a bulb. (a) False (b) True
17. 17.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) ammeter (b) wire (c) resistor (d) cell
18. 18.Which drawing is the symbol for a voltmeter? (a) many long-short pairs (b) a small empty box (c) a plain rectangle (d) a circle with V inside
19. 19.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) quick and clear for all (c) to hide the circuit (d) to make it colourful
20. 20.Which drawing is the symbol for a capacitor? (a) triangle, bar and arrows (b) two or more cell symbols (c) two equal parallel lines (d) a circle with M inside
21. 21.Which drawing is the symbol for a wire? (a) a straight line (b) a small empty box (c) a plain rectangle (d) a circle with a cross
22. 22.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) wire (b) battery (c) resistor (d) diode
23. 23.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) diode (b) resistor (c) junction (d) capacitor
24. 24.✏️ In a circuit diagram, which part is drawn as a straight line? (a) motor (b) junction (c) capacitor (d) wire
25. 25.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) wire (b) ammeter (c) bulb (d) voltmeter
26. 26.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) voltmeter (b) switch (c) bulb (d) wire
27. 27.Which drawing is the symbol for a bulb? (a) triangle against a bar (b) a circle with A inside (c) a circle with a cross (d) a plain rectangle
28. 28.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) ammeter (b) diode (c) resistor (d) cell
29. 29.True or false: two or more cell symbols is the symbol for a battery. (a) False (b) True
30. 30.True or false: a circle with V inside is the symbol for a voltmeter. (a) True (b) False
31. 31.True or false: a small empty box is the symbol for a cell. (a) True (b) False
32. 32.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) voltmeter (b) capacitor (c) bulb (d) diode
33. 33.True or false: a straight line is the symbol for a wire. (a) True (b) False
34. 34.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) bulb (b) switch (c) cell (d) battery
35. 35.True or false: many long-short pairs is the symbol for a resistor. (a) False (b) True
36. 36.Which drawing is the symbol for a cell? (a) a dot where wires meet (b) a circle with M inside (c) a small empty box (d) one tall, one short bar
37. 37.True or false: a long and a short line is the symbol for a diode. (a) True (b) False
38. 38.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) wire (b) ammeter (c) capacitor (d) switch
39. 39.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) battery (b) switch (c) junction (d) bulb
40. 40.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) wire (b) motor (c) battery (d) ammeter

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