Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 125 · 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: two equal parallel lines is the symbol for a capacitor. (a) True (b) False
2. 2.True or false: triangle against a bar is the symbol for a diode. (a) True (b) False
3. 3.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) little stars (c) dotted circles (d) straight lines
4. 4.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) diode (b) resistor (c) voltmeter (d) switch
5. 5.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) to make it colourful (c) to hide the circuit (d) symbols are heavier
6. 6.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) capacitor (b) voltmeter (c) wire (d) LED
7. 7.True or false: a plain rectangle is the symbol for a resistor. (a) False (b) True
8. 8.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) motor (b) bulb (c) switch (d) battery
9. 9.True or false: one tall, one short bar is the symbol for a battery. (a) True (b) False
10. 10.Which drawing is the symbol for a capacitor? (a) a small empty box (b) two equal parallel lines (c) a straight line (d) a circle with V inside
11. 11.True or false: a circle with A inside is the symbol for an ammeter. (a) True (b) False
12. 12.Which drawing is the symbol for a cell? (a) triangle, bar and arrows (b) a circle with A inside (c) two equal parallel lines (d) a long and a short line
13. 13.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) neither line (c) both lines (d) the longer line
14. 14.True or false: a line lifted at a gap is the symbol for a switch. (a) False (b) True
15. 15.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) bulb (b) cell (c) switch (d) diode
16. 16.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) cell (b) diode (c) switch (d) battery
17. 17.Which drawing is the symbol for a motor? (a) two equal parallel lines (b) a dot where wires meet (c) a circle with M inside (d) a plain rectangle
18. 18.Which drawing is the symbol for a wire? (a) a small empty box (b) a straight line (c) two equal parallel lines (d) one tall, one short bar
19. 19.Which drawing is the symbol for a switch? (a) triangle against a bar (b) a circle with M inside (c) a long and a short line (d) a line lifted at a gap
20. 20.Which drawing is the symbol for a junction? (a) a dot where wires meet (b) a circle with a cross (c) triangle against a bar (d) two or more cell symbols
21. 21.True or false: a line lifted at a gap is the symbol for a voltmeter. (a) True (b) False
22. 22.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) resistor (b) ammeter (c) battery (d) cell
23. 23.Which drawing is the symbol for a voltmeter? (a) two or more cell symbols (b) a circle with V inside (c) two equal parallel lines (d) a small empty box
24. 24.True or false: a circle with V inside is the symbol for a voltmeter. (a) False (b) True
25. 25.True or false: a straight line is the symbol for a resistor. (a) False (b) True
26. 26.True or false: triangle, bar and arrows is the symbol for a motor. (a) True (b) False
27. 27.Which drawing is the symbol for an LED? (a) one tall, one short bar (b) a plain rectangle (c) a circle with a cross (d) triangle, bar and arrows
28. 28.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) cell (b) switch (c) junction (d) wire
29. 29.True or false: one tall, one short bar is the symbol for a cell. (a) False (b) True
30. 30.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) resistor (b) bulb (c) LED (d) cell
31. 31.True or false: a small empty box is the symbol for a junction. (a) False (b) True
32. 32.Which drawing is the symbol for an ammeter? (a) a circle with A inside (b) a dot where wires meet (c) a circle with M inside (d) a line lifted at a gap
33. 33.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) battery (b) junction (c) diode (d) bulb
34. 34.True or false: a small empty box is the symbol for a cell. (a) False (b) True
35. 35.True or false: a circle with M inside is the symbol for a motor. (a) True (b) False
36. 36.True or false: a long and a short line is the symbol for a bulb. (a) True (b) False
37. 37.Which drawing is the symbol for a bulb? (a) a dot where wires meet (b) many long-short pairs (c) a circle with an X in it (d) a straight line
38. 38.Which drawing is the symbol for a diode? (a) a circle with A inside (b) triangle against a bar (c) a circle with M inside (d) one tall, one short bar
39. 39.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) LED (b) junction (c) resistor (d) bulb
40. 40.True or false: a circle with V inside is the symbol for a cell. (a) False (b) True

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