Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 851 · 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 small empty box? (a) resistor (b) switch (c) LED (d) cell
2. 2.Which drawing is the symbol for a voltmeter? (a) a circle with a cross (b) a circle with V inside (c) a long and a short line (d) triangle against a bar
3. 3.True or false: a straight line is the symbol for a wire. (a) True (b) False
4. 4.Which drawing is the symbol for a resistor? (a) a long and a short line (b) a dot where wires meet (c) a small empty box (d) many long-short pairs
5. 5.Which drawing is the symbol for an LED? (a) a circle with a cross (b) a long and a short line (c) triangle, bar and arrows (d) a small empty box
6. 6.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) quick and clear for all (c) to hide the circuit (d) symbols are heavier
7. 7.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) little stars (c) straight lines (d) dotted circles
8. 8.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the shorter line (c) neither line (d) the longer line
9. 9.True or false: a circle with M inside is the symbol for a motor. (a) False (b) True
10. 10.True or false: one tall, one short bar is the symbol for a cell. (a) False (b) True
11. 11.True or false: triangle against a bar is the symbol for a resistor. (a) True (b) False
12. 12.Which drawing is the symbol for a bulb? (a) a circle with a cross (b) a small empty box (c) a circle with A inside (d) two equal parallel lines
13. 13.Which drawing is the symbol for a cell? (a) one tall, one short bar (b) a circle with A inside (c) a circle with V inside (d) a dot where wires meet
14. 14.True or false: a circle with A inside is the symbol for a bulb. (a) False (b) True
15. 15.True or false: a circle with a cross is the symbol for an ammeter. (a) False (b) True
16. 16.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) cell (b) junction (c) ammeter (d) motor
17. 17.True or false: many long-short pairs is the symbol for a motor. (a) True (b) False
18. 18.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) wire (b) diode (c) bulb (d) LED
19. 19.Which drawing is the symbol for a junction? (a) a circle with a cross (b) a long and a short line (c) a dot where wires meet (d) a plain rectangle
20. 20.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) battery (b) cell (c) capacitor (d) bulb
21. 21.True or false: a plain rectangle is the symbol for a resistor. (a) True (b) False
22. 22.Which drawing is the symbol for a capacitor? (a) a circle with a cross (b) a long and a short line (c) triangle against a bar (d) two equal parallel lines
23. 23.Which drawing is the symbol for a wire? (a) a dot where wires meet (b) a circle with a cross (c) one tall, one short bar (d) a straight line
24. 24.Which drawing is the symbol for a diode? (a) a small empty box (b) triangle against a bar (c) two equal parallel lines (d) a dot where wires meet
25. 25.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) capacitor (b) battery (c) voltmeter (d) cell
26. 26.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) battery (b) LED (c) bulb (d) motor
27. 27.True or false: a straight line is the symbol for a bulb. (a) True (b) False
28. 28.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) bulb (b) LED (c) motor (d) battery
29. 29.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) capacitor (b) cell (c) switch (d) diode
30. 30.True or false: a long and a short line is the symbol for a capacitor. (a) True (b) False
31. 31.True or false: a long and a short line is the symbol for a battery. (a) False (b) True
32. 32.True or false: a circle with a cross is the symbol for a junction. (a) False (b) True
33. 33.Which drawing is the symbol for a cell? (a) a dot where wires meet (b) a small empty box (c) triangle, bar and arrows (d) a long and a short line
34. 34.True or false: two equal parallel lines is the symbol for a resistor. (a) False (b) True
35. 35.True or false: a circle with M inside is the symbol for a junction. (a) True (b) False
36. 36.Which drawing is the symbol for an ammeter? (a) a circle with a cross (b) two or more cell symbols (c) a straight line (d) a circle with A inside
37. 37.True or false: a line lifted at a gap is the symbol for a resistor. (a) True (b) False
38. 38.True or false: two equal parallel lines is the symbol for a switch. (a) False (b) True
39. 39.Which drawing is the symbol for a battery? (a) a plain rectangle (b) triangle against a bar (c) a dot where wires meet (d) many long-short pairs
40. 40.True or false: two or more cell symbols is the symbol for a bulb. (a) True (b) False

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