Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 121 · 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 straight line is the symbol for a bulb. (a) True (b) False
2. 2.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) to make it colourful (c) quick and clear for all (d) to hide the circuit
3. 3.Which drawing is the symbol for a resistor? (a) two or more cell symbols (b) a plain rectangle (c) a dot where wires meet (d) many long-short pairs
4. 4.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) voltmeter (b) bulb (c) switch (d) junction
5. 5.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) wavy lines (c) little stars (d) dotted circles
6. 6.Which drawing is the symbol for a wire? (a) a circle with an X in it (b) two or more cell symbols (c) a dot where wires meet (d) a straight line
7. 7.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) wire (b) diode (c) capacitor (d) voltmeter
8. 8.True or false: two or more cell symbols is the symbol for a battery. (a) False (b) True
9. 9.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) battery (b) ammeter (c) diode (d) bulb
10. 10.Which drawing is the symbol for an LED? (a) one tall, one short bar (b) triangle, bar and arrows (c) a circle with V inside (d) a circle with a cross
11. 11.Which drawing is the symbol for a voltmeter? (a) two equal parallel lines (b) a circle with V inside (c) a circle with A inside (d) a plain rectangle
12. 12.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) battery (b) cell (c) switch (d) bulb
13. 13.True or false: a plain rectangle is the symbol for a resistor. (a) False (b) True
14. 14.True or false: triangle against a bar is the symbol for a junction. (a) True (b) False
15. 15.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) neither line (c) both lines (d) the longer line
16. 16.True or false: a small empty box is the symbol for a switch. (a) True (b) False
17. 17.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) capacitor (b) battery (c) diode (d) motor
18. 18.True or false: a long and a short line is the symbol for a capacitor. (a) False (b) True
19. 19.Which drawing is the symbol for a diode? (a) a circle with a cross (b) triangle against a bar (c) a circle with V inside (d) one tall, one short bar
20. 20.Which drawing is the symbol for a switch? (a) a circle with A inside (b) many long-short pairs (c) two equal parallel lines (d) a line lifted at a gap
21. 21.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) LED (b) bulb (c) voltmeter (d) capacitor
22. 22.Which drawing is the symbol for a capacitor? (a) two equal parallel lines (b) a long and a short line (c) one tall, one short bar (d) a circle with A inside
23. 23.True or false: many long-short pairs is the symbol for an LED. (a) True (b) False
24. 24.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) motor (b) junction (c) switch (d) resistor
25. 25.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) LED (b) wire (c) voltmeter (d) ammeter
26. 26.True or false: a circle with A inside is the symbol for a battery. (a) False (b) True
27. 27.True or false: triangle, bar and arrows is the symbol for a switch. (a) False (b) True
28. 28.True or false: a circle with V inside is the symbol for a bulb. (a) True (b) False
29. 29.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) resistor (b) LED (c) cell (d) motor
30. 30.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) resistor (b) diode (c) switch (d) motor
31. 31.Which drawing is the symbol for a bulb? (a) a circle with V inside (b) a circle with A inside (c) a small empty box (d) a circle with a cross
32. 32.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) switch (b) bulb (c) ammeter (d) resistor
33. 33.True or false: a long and a short line is the symbol for an ammeter. (a) True (b) False
34. 34.True or false: triangle against a bar is the symbol for a capacitor. (a) False (b) True
35. 35.True or false: a circle with V inside is the symbol for a voltmeter. (a) False (b) True
36. 36.Which drawing is the symbol for a cell? (a) two or more cell symbols (b) many long-short pairs (c) a long and a short line (d) a circle with A inside
37. 37.True or false: two equal parallel lines is the symbol for a bulb. (a) True (b) False
38. 38.Which drawing is the symbol for a battery? (a) a circle with A inside (b) one tall, one short bar (c) a line lifted at a gap (d) two or more cell symbols
39. 39.True or false: a circle with V inside is the symbol for a battery. (a) True (b) False
40. 40.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) voltmeter (b) ammeter (c) cell (d) resistor

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