Electronics Worksheet: Circuit Symbols

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

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