Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 302 · 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.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) dotted circles (c) straight lines (d) wavy lines
2. 2.Which drawing is the symbol for a resistor? (a) a line lifted at a gap (b) one tall, one short bar (c) two equal parallel lines (d) a plain rectangle
3. 3.Which drawing is the symbol for a voltmeter? (a) two equal parallel lines (b) a circle with A inside (c) a circle with M inside (d) a circle with V inside
4. 4.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) symbols are heavier (c) to hide the circuit (d) quick and clear for all
5. 5.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) resistor (b) bulb (c) voltmeter (d) wire
6. 6.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) battery (b) resistor (c) cell (d) wire
7. 7.True or false: a circle with V inside is the symbol for a voltmeter. (a) True (b) False
8. 8.True or false: triangle against a bar is the symbol for a cell. (a) True (b) False
9. 9.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) resistor (b) LED (c) ammeter (d) junction
10. 10.True or false: one tall, one short bar is the symbol for a resistor. (a) False (b) True
11. 11.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the longer line (c) the shorter line (d) neither line
12. 12.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) diode (b) switch (c) motor (d) battery
13. 13.Which drawing is the symbol for a cell? (a) many long-short pairs (b) a plain rectangle (c) a long and a short line (d) a circle with M inside
14. 14.True or false: triangle, bar and arrows is the symbol for an LED. (a) True (b) False
15. 15.Which drawing is the symbol for an LED? (a) a circle with M inside (b) triangle, bar and arrows (c) triangle against a bar (d) a circle with A inside
16. 16.Which drawing is the symbol for a wire? (a) a circle with V inside (b) a line lifted at a gap (c) a straight line (d) one tall, one short bar
17. 17.True or false: two equal parallel lines is the symbol for a capacitor. (a) True (b) False
18. 18.Which drawing is the symbol for a motor? (a) a circle with an X in it (b) a circle with a cross (c) a small empty box (d) a circle with M inside
19. 19.True or false: a circle with a cross is the symbol for a bulb. (a) False (b) True
20. 20.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) LED (b) junction (c) voltmeter (d) ammeter
21. 21.Which drawing is the symbol for a battery? (a) one tall, one short bar (b) two or more cell symbols (c) a small empty box (d) a straight line
22. 22.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) bulb (b) resistor (c) switch (d) junction
23. 23.Which drawing is the symbol for a junction? (a) triangle against a bar (b) a circle with A inside (c) one tall, one short bar (d) a dot where wires meet
24. 24.Which drawing is the symbol for a bulb? (a) two or more cell symbols (b) many long-short pairs (c) a circle with a cross (d) a circle with A inside
25. 25.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) bulb (b) junction (c) cell (d) ammeter
26. 26.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) junction (b) voltmeter (c) diode (d) capacitor
27. 27.True or false: a plain rectangle is the symbol for a bulb. (a) True (b) False
28. 28.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) motor (b) cell (c) junction (d) voltmeter
29. 29.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) battery (b) diode (c) cell (d) ammeter
30. 30.Which drawing is the symbol for an ammeter? (a) triangle, bar and arrows (b) a plain rectangle (c) a circle with A inside (d) a straight line
31. 31.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) cell (b) diode (c) junction (d) capacitor
32. 32.Which drawing is the symbol for a diode? (a) a circle with an X in it (b) a long and a short line (c) triangle against a bar (d) a circle with a cross
33. 33.Which drawing is the symbol for a bulb? (a) a circle with an X in it (b) a dot where wires meet (c) a straight line (d) a circle with A inside
34. 34.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) diode (b) motor (c) ammeter (d) wire
35. 35.True or false: a circle with an X in it is the symbol for an LED. (a) True (b) False
36. 36.True or false: a plain rectangle is the symbol for a junction. (a) False (b) True
37. 37.Which drawing is the symbol for a battery? (a) many long-short pairs (b) a circle with A inside (c) two equal parallel lines (d) a circle with a cross
38. 38.True or false: a line lifted at a gap is the symbol for a diode. (a) False (b) True
39. 39.True or false: many long-short pairs is the symbol for a battery. (a) False (b) True
40. 40.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) bulb (b) diode (c) junction (d) motor

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