Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 120 · 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.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) dotted circles (c) wavy lines (d) straight lines
3. 3.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) to make it colourful (c) quick and clear for all (d) symbols are heavier
4. 4.True or false: a circle with an X in it is the symbol for a motor. (a) True (b) False
5. 5.Which drawing is the symbol for a bulb? (a) a circle with a cross (b) a circle with A inside (c) one tall, one short bar (d) triangle against a bar
6. 6.True or false: a circle with an X in it is the symbol for a diode. (a) False (b) True
7. 7.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) battery (b) voltmeter (c) cell (d) ammeter
8. 8.True or false: a circle with A inside is the symbol for an ammeter. (a) False (b) True
9. 9.True or false: one tall, one short bar is the symbol for a cell. (a) True (b) False
10. 10.Which drawing is the symbol for a resistor? (a) a dot where wires meet (b) a circle with A inside (c) many long-short pairs (d) a small empty box
11. 11.True or false: one tall, one short bar is the symbol for a switch. (a) True (b) False
12. 12.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) wire (b) resistor (c) motor (d) switch
13. 13.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the shorter line (c) neither line (d) the longer line
14. 14.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) bulb (b) capacitor (c) wire (d) motor
15. 15.True or false: two or more cell symbols is the symbol for a voltmeter. (a) False (b) True
16. 16.True or false: a dot where wires meet is the symbol for a junction. (a) True (b) False
17. 17.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) resistor (b) voltmeter (c) switch (d) cell
18. 18.True or false: two or more cell symbols is the symbol for a battery. (a) True (b) False
19. 19.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) LED (b) capacitor (c) bulb (d) switch
20. 20.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) junction (b) ammeter (c) LED (d) battery
21. 21.Which drawing is the symbol for a voltmeter? (a) a straight line (b) a circle with A inside (c) a long and a short line (d) a circle with V inside
22. 22.Which drawing is the symbol for a capacitor? (a) a circle with a cross (b) two equal parallel lines (c) a dot where wires meet (d) a circle with M inside
23. 23.Which drawing is the symbol for a battery? (a) a small empty box (b) a long and a short line (c) a circle with A inside (d) many long-short pairs
24. 24.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) junction (b) LED (c) bulb (d) cell
25. 25.True or false: a long and a short line is the symbol for a bulb. (a) False (b) True
26. 26.True or false: a plain rectangle is the symbol for a resistor. (a) False (b) True
27. 27.Which drawing is the symbol for a cell? (a) triangle against a bar (b) a small empty box (c) a circle with V inside (d) a long and a short line
28. 28.Which drawing is the symbol for a resistor? (a) triangle against a bar (b) a circle with A inside (c) a plain rectangle (d) a dot where wires meet
29. 29.Which drawing is the symbol for an LED? (a) a small empty box (b) triangle, bar and arrows (c) two or more cell symbols (d) two equal parallel lines
30. 30.Which drawing is the symbol for a bulb? (a) a circle with V inside (b) a line lifted at a gap (c) two or more cell symbols (d) a circle with an X in it
31. 31.✏️ In a circuit diagram, which part is drawn as a straight line? (a) motor (b) cell (c) wire (d) bulb
32. 32.True or false: a plain rectangle is the symbol for a junction. (a) True (b) False
33. 33.True or false: a small empty box is the symbol for a resistor. (a) False (b) True
34. 34.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) wire (b) resistor (c) motor (d) bulb
35. 35.True or false: a circle with a cross is the symbol for a cell. (a) False (b) True
36. 36.True or false: a circle with V inside is the symbol for a bulb. (a) False (b) True
37. 37.Which drawing is the symbol for an ammeter? (a) a small empty box (b) a plain rectangle (c) two or more cell symbols (d) a circle with A inside
38. 38.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) bulb (b) voltmeter (c) capacitor (d) resistor
39. 39.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) resistor (b) battery (c) capacitor (d) motor
40. 40.Which drawing is the symbol for a switch? (a) a line lifted at a gap (b) a circle with A inside (c) triangle, bar and arrows (d) a circle with M inside

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