Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 931 · 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.✏️ 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
2. 2.Which drawing is the symbol for a battery? (a) triangle, bar and arrows (b) a straight line (c) two or more cell symbols (d) a plain rectangle
3. 3.Which drawing is the symbol for a wire? (a) a long and a short line (b) a circle with an X in it (c) a straight line (d) one tall, one short bar
4. 4.Which drawing is the symbol for an LED? (a) a circle with a cross (b) triangle, bar and arrows (c) a straight line (d) a circle with A inside
5. 5.Which drawing is the symbol for a resistor? (a) a small empty box (b) a circle with an X in it (c) triangle, bar and arrows (d) a circle with a cross
6. 6.✏️ In a circuit diagram, which part is drawn as a straight line? (a) capacitor (b) wire (c) battery (d) voltmeter
7. 7.True or false: a plain rectangle is the symbol for a resistor. (a) False (b) True
8. 8.True or false: two equal parallel lines is the symbol for a capacitor. (a) False (b) True
9. 9.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) voltmeter (b) junction (c) battery (d) diode
10. 10.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) capacitor (b) LED (c) voltmeter (d) resistor
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.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) little stars (c) straight lines (d) wavy lines
13. 13.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) bulb (b) motor (c) resistor (d) battery
14. 14.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) cell (b) LED (c) diode (d) bulb
15. 15.True or false: a line lifted at a gap is the symbol for a bulb. (a) True (b) False
16. 16.True or false: one tall, one short bar is the symbol for an LED. (a) True (b) False
17. 17.Which drawing is the symbol for a switch? (a) a line lifted at a gap (b) a straight line (c) many long-short pairs (d) triangle against a bar
18. 18.True or false: a circle with A inside is the symbol for a motor. (a) False (b) True
19. 19.True or false: a circle with an X in it is the symbol for a bulb. (a) True (b) False
20. 20.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) LED (b) junction (c) battery (d) voltmeter
21. 21.Which drawing is the symbol for a cell? (a) two equal parallel lines (b) a plain rectangle (c) triangle against a bar (d) a long and a short line
22. 22.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) junction (b) LED (c) bulb (d) diode
23. 23.True or false: many long-short pairs is the symbol for a battery. (a) True (b) False
24. 24.Which drawing is the symbol for a diode? (a) triangle against a bar (b) two equal parallel lines (c) triangle, bar and arrows (d) a dot where wires meet
25. 25.Which drawing is the symbol for a battery? (a) a small empty box (b) a circle with A inside (c) a straight line (d) many long-short pairs
26. 26.True or false: a circle with a cross is the symbol for a diode. (a) True (b) False
27. 27.True or false: a long and a short line is the symbol for an ammeter. (a) True (b) False
28. 28.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) cell (b) resistor (c) junction (d) battery
29. 29.True or false: a circle with M inside is the symbol for a motor. (a) False (b) True
30. 30.True or false: a circle with an X in it is the symbol for a switch. (a) True (b) False
31. 31.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) diode (b) ammeter (c) resistor (d) LED
32. 32.Which drawing is the symbol for a capacitor? (a) one tall, one short bar (b) triangle against a bar (c) a small empty box (d) two equal parallel lines
33. 33.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) diode (b) motor (c) bulb (d) battery
34. 34.True or false: a circle with M inside is the symbol for a wire. (a) False (b) True
35. 35.Which drawing is the symbol for a cell? (a) triangle, bar and arrows (b) a circle with a cross (c) a circle with V inside (d) one tall, one short bar
36. 36.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) cell (b) bulb (c) diode (d) resistor
37. 37.True or false: a line lifted at a gap is the symbol for a switch. (a) True (b) False
38. 38.True or false: two equal parallel lines is the symbol for a junction. (a) True (b) False
39. 39.True or false: a circle with A inside is the symbol for a diode. (a) False (b) True
40. 40.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) switch (b) resistor (c) motor (d) wire

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