Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 439 · 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 a straight line? (a) junction (b) wire (c) capacitor (d) bulb
2. 2.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) bulb (b) switch (c) resistor (d) cell
3. 3.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) ammeter (b) motor (c) resistor (d) bulb
4. 4.Which drawing is the symbol for a bulb? (a) a circle with an X in it (b) a circle with M inside (c) a dot where wires meet (d) a straight line
5. 5.Which drawing is the symbol for a capacitor? (a) a dot where wires meet (b) two equal parallel lines (c) triangle against a bar (d) a circle with a cross
6. 6.Which drawing is the symbol for a cell? (a) one tall, one short bar (b) two equal parallel lines (c) two or more cell symbols (d) a line lifted at a gap
7. 7.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) quick and clear for all (c) symbols are heavier (d) to make it colourful
8. 8.Which drawing is the symbol for a voltmeter? (a) a dot where wires meet (b) a line lifted at a gap (c) a circle with V inside (d) triangle, bar and arrows
9. 9.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) resistor (b) battery (c) switch (d) bulb
10. 10.True or false: a circle with A inside is the symbol for a wire. (a) True (b) False
11. 11.Which drawing is the symbol for a wire? (a) a straight line (b) a circle with V inside (c) a long and a short line (d) triangle, bar and arrows
12. 12.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the shorter line (c) the longer line (d) neither line
13. 13.Which drawing is the symbol for a diode? (a) two equal parallel lines (b) a long and a short line (c) triangle against a bar (d) a line lifted at a gap
14. 14.True or false: two or more cell symbols is the symbol for a capacitor. (a) False (b) True
15. 15.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) junction (b) bulb (c) voltmeter (d) switch
16. 16.Which drawing is the symbol for a junction? (a) a dot where wires meet (b) two or more cell symbols (c) one tall, one short bar (d) a line lifted at a gap
17. 17.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) switch (b) ammeter (c) battery (d) cell
18. 18.True or false: a line lifted at a gap is the symbol for an ammeter. (a) False (b) True
19. 19.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) LED (b) resistor (c) motor (d) capacitor
20. 20.Which drawing is the symbol for a resistor? (a) a line lifted at a gap (b) a plain rectangle (c) triangle, bar and arrows (d) a straight line
21. 21.True or false: a long and a short line is the symbol for a cell. (a) True (b) False
22. 22.Which drawing is the symbol for a bulb? (a) a straight line (b) two equal parallel lines (c) a circle with a cross (d) a line lifted at a gap
23. 23.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) battery (b) cell (c) switch (d) diode
24. 24.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) voltmeter (b) LED (c) cell (d) battery
25. 25.Which drawing is the symbol for an ammeter? (a) two equal parallel lines (b) two or more cell symbols (c) a circle with A inside (d) triangle against a bar
26. 26.True or false: a plain rectangle is the symbol for a junction. (a) False (b) True
27. 27.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) little stars (c) dotted circles (d) wavy lines
28. 28.True or false: a straight line is the symbol for a bulb. (a) True (b) False
29. 29.Which drawing is the symbol for a switch? (a) a line lifted at a gap (b) a circle with A inside (c) a straight line (d) a circle with V inside
30. 30.True or false: many long-short pairs is the symbol for a capacitor. (a) False (b) True
31. 31.True or false: a circle with a cross is the symbol for a bulb. (a) False (b) True
32. 32.True or false: triangle against a bar is the symbol for a wire. (a) False (b) True
33. 33.True or false: two equal parallel lines is the symbol for a diode. (a) True (b) False
34. 34.True or false: a long and a short line is the symbol for a capacitor. (a) False (b) True
35. 35.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) resistor (b) bulb (c) diode (d) wire
36. 36.True or false: a long and a short line is the symbol for a switch. (a) True (b) False
37. 37.True or false: many long-short pairs is the symbol for a diode. (a) True (b) False
38. 38.Which drawing is the symbol for a motor? (a) a circle with M inside (b) a long and a short line (c) a circle with an X in it (d) a plain rectangle
39. 39.True or false: a small empty box is the symbol for a resistor. (a) False (b) True
40. 40.Which drawing is the symbol for a battery? (a) a circle with an X in it (b) two equal parallel lines (c) two or more cell symbols (d) a long and a short line

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