Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 321 · 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 circle with M inside? (a) motor (b) junction (c) cell (d) switch
2. 2.True or false: a straight line is the symbol for a wire. (a) True (b) False
3. 3.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) both lines (c) the shorter line (d) neither line
4. 4.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) switch (b) cell (c) motor (d) ammeter
5. 5.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) straight lines (c) wavy lines (d) dotted circles
6. 6.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) capacitor (b) LED (c) voltmeter (d) battery
7. 7.True or false: two equal parallel lines is the symbol for a wire. (a) True (b) False
8. 8.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) battery (b) bulb (c) diode (d) junction
9. 9.True or false: a straight line is the symbol for a bulb. (a) False (b) True
10. 10.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) cell (b) battery (c) bulb (d) LED
11. 11.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) capacitor (b) junction (c) motor (d) diode
12. 12.Which drawing is the symbol for a bulb? (a) two or more cell symbols (b) many long-short pairs (c) triangle, bar and arrows (d) a circle with a cross
13. 13.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) battery (b) ammeter (c) switch (d) bulb
14. 14.Which drawing is the symbol for a cell? (a) triangle, bar and arrows (b) a straight line (c) a long and a short line (d) a small empty box
15. 15.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) diode (b) bulb (c) capacitor (d) switch
16. 16.True or false: a small empty box is the symbol for a resistor. (a) False (b) True
17. 17.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) ammeter (b) battery (c) LED (d) wire
18. 18.Which drawing is the symbol for a wire? (a) a circle with a cross (b) a long and a short line (c) a straight line (d) triangle against a bar
19. 19.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) to make it colourful (c) quick and clear for all (d) to hide the circuit
20. 20.Which drawing is the symbol for a voltmeter? (a) two or more cell symbols (b) a circle with V inside (c) triangle against a bar (d) two equal parallel lines
21. 21.True or false: one tall, one short bar is the symbol for a cell. (a) True (b) False
22. 22.Which drawing is the symbol for an LED? (a) a circle with M inside (b) a small empty box (c) a circle with a cross (d) triangle, bar and arrows
23. 23.Which drawing is the symbol for a switch? (a) a circle with A inside (b) two or more cell symbols (c) a straight line (d) a line lifted at a gap
24. 24.True or false: triangle, bar and arrows is the symbol for an LED. (a) True (b) False
25. 25.Which drawing is the symbol for a junction? (a) a small empty box (b) two equal parallel lines (c) a circle with M inside (d) a dot where wires meet
26. 26.True or false: triangle against a bar is the symbol for a battery. (a) False (b) True
27. 27.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) cell (b) ammeter (c) battery (d) resistor
28. 28.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) wire (b) junction (c) battery (d) switch
29. 29.Which drawing is the symbol for a diode? (a) a circle with an X in it (b) triangle against a bar (c) two equal parallel lines (d) a circle with V inside
30. 30.True or false: triangle against a bar is the symbol for a diode. (a) False (b) True
31. 31.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) motor (b) diode (c) junction (d) resistor
32. 32.True or false: a circle with A inside is the symbol for a bulb. (a) False (b) True
33. 33.Which drawing is the symbol for a capacitor? (a) a line lifted at a gap (b) one tall, one short bar (c) two equal parallel lines (d) a straight line
34. 34.Which drawing is the symbol for an ammeter? (a) a circle with M inside (b) a circle with A inside (c) a line lifted at a gap (d) a circle with V inside
35. 35.True or false: one tall, one short bar is the symbol for an LED. (a) False (b) True
36. 36.True or false: a circle with A inside is the symbol for an ammeter. (a) False (b) True
37. 37.Which drawing is the symbol for a battery? (a) triangle, bar and arrows (b) a small empty box (c) a circle with an X in it (d) two or more cell symbols
38. 38.True or false: a line lifted at a gap is the symbol for a diode. (a) False (b) True
39. 39.True or false: a circle with an X in it is the symbol for a switch. (a) False (b) True
40. 40.True or false: triangle, bar and arrows is the symbol for a motor. (a) False (b) True

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