Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 140 · 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, which part is drawn as one tall, one short bar? (a) resistor (b) battery (c) cell (d) motor
2. 2.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) bulb (b) junction (c) switch (d) diode
3. 3.True or false: one tall, one short bar is the symbol for an ammeter. (a) True (b) False
4. 4.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) little stars (c) wavy lines (d) dotted circles
5. 5.True or false: triangle against a bar is the symbol for a diode. (a) False (b) True
6. 6.Which drawing is the symbol for a bulb? (a) two equal parallel lines (b) triangle, bar and arrows (c) a circle with M inside (d) a circle with a cross
7. 7.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) resistor (b) bulb (c) battery (d) switch
8. 8.True or false: two equal parallel lines is the symbol for a capacitor. (a) False (b) True
9. 9.Which drawing is the symbol for a voltmeter? (a) a circle with V inside (b) a dot where wires meet (c) two equal parallel lines (d) a straight line
10. 10.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) junction (b) switch (c) motor (d) resistor
11. 11.True or false: two equal parallel lines is the symbol for a motor. (a) True (b) False
12. 12.True or false: a circle with a cross is the symbol for a bulb. (a) False (b) True
13. 13.Which drawing is the symbol for a switch? (a) a plain rectangle (b) triangle, bar and arrows (c) many long-short pairs (d) a line lifted at a gap
14. 14.True or false: a circle with an X in it is the symbol for a capacitor. (a) False (b) True
15. 15.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) switch (b) ammeter (c) bulb (d) diode
16. 16.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) voltmeter (b) LED (c) wire (d) battery
17. 17.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) capacitor (b) bulb (c) LED (d) voltmeter
18. 18.✏️ 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
19. 19.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) the longer line (c) neither line (d) both lines
20. 20.True or false: a line lifted at a gap is the symbol for a battery. (a) True (b) False
21. 21.True or false: many long-short pairs is the symbol for a battery. (a) True (b) False
22. 22.Which drawing is the symbol for a battery? (a) two or more cell symbols (b) a line lifted at a gap (c) a circle with M inside (d) a straight line
23. 23.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) resistor (b) wire (c) cell (d) capacitor
24. 24.True or false: a small empty box is the symbol for a battery. (a) True (b) False
25. 25.True or false: a dot where wires meet is the symbol for a wire. (a) True (b) False
26. 26.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) resistor (b) ammeter (c) diode (d) LED
27. 27.True or false: triangle, bar and arrows is the symbol for an LED. (a) True (b) False
28. 28.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) motor (b) diode (c) wire (d) ammeter
29. 29.Which drawing is the symbol for a bulb? (a) many long-short pairs (b) a circle with an X in it (c) two equal parallel lines (d) two or more cell symbols
30. 30.True or false: a line lifted at a gap is the symbol for a switch. (a) True (b) False
31. 31.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) ammeter (b) bulb (c) voltmeter (d) wire
32. 32.True or false: a small empty box is the symbol for an ammeter. (a) False (b) True
33. 33.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) battery (b) voltmeter (c) junction (d) switch
34. 34.True or false: a circle with an X in it is the symbol for a cell. (a) False (b) True
35. 35.Which drawing is the symbol for a motor? (a) two equal parallel lines (b) a circle with a cross (c) a long and a short line (d) a circle with M inside
36. 36.Which drawing is the symbol for a junction? (a) a circle with V inside (b) a small empty box (c) many long-short pairs (d) a dot where wires meet
37. 37.True or false: a circle with M inside is the symbol for a motor. (a) False (b) True
38. 38.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) wire (b) cell (c) resistor (d) voltmeter
39. 39.True or false: a circle with A inside is the symbol for an ammeter. (a) False (b) True
40. 40.True or false: one tall, one short bar is the symbol for a cell. (a) False (b) True

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