Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 70 · 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.Which drawing is the symbol for a wire? (a) a straight line (b) a circle with an X in it (c) triangle against a bar (d) a small empty box
2. 2.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the shorter line (c) neither line (d) the longer line
3. 3.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) switch (b) battery (c) capacitor (d) wire
4. 4.Which drawing is the symbol for a bulb? (a) two or more cell symbols (b) a circle with an X in it (c) one tall, one short bar (d) a straight line
5. 5.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) to hide the circuit (c) quick and clear for all (d) to make it colourful
6. 6.Which drawing is the symbol for a resistor? (a) a plain rectangle (b) triangle against a bar (c) a line lifted at a gap (d) one tall, one short bar
7. 7.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) switch (b) capacitor (c) junction (d) ammeter
8. 8.Which drawing is the symbol for a junction? (a) many long-short pairs (b) a dot where wires meet (c) a circle with A inside (d) triangle, bar and arrows
9. 9.✏️ In a circuit diagram, which part is drawn as a straight line? (a) wire (b) bulb (c) switch (d) diode
10. 10.Which drawing is the symbol for an ammeter? (a) a circle with M inside (b) a circle with A inside (c) a circle with a cross (d) a plain rectangle
11. 11.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) LED (b) cell (c) resistor (d) wire
12. 12.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) cell (b) battery (c) switch (d) resistor
13. 13.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) little stars (c) wavy lines (d) straight lines
14. 14.True or false: a long and a short line is the symbol for a cell. (a) True (b) False
15. 15.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) switch (b) wire (c) motor (d) voltmeter
16. 16.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) junction (b) cell (c) diode (d) motor
17. 17.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) cell (b) switch (c) LED (d) diode
18. 18.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) capacitor (b) bulb (c) junction (d) ammeter
19. 19.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) motor (b) voltmeter (c) resistor (d) ammeter
20. 20.Which drawing is the symbol for a bulb? (a) many long-short pairs (b) a circle with a cross (c) one tall, one short bar (d) a circle with A inside
21. 21.Which drawing is the symbol for a voltmeter? (a) two equal parallel lines (b) a circle with V inside (c) triangle, bar and arrows (d) two or more cell symbols
22. 22.True or false: triangle, bar and arrows is the symbol for an LED. (a) False (b) True
23. 23.True or false: a circle with a cross is the symbol for a bulb. (a) False (b) True
24. 24.Which drawing is the symbol for a motor? (a) triangle, bar and arrows (b) a plain rectangle (c) a circle with V inside (d) a circle with M inside
25. 25.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) bulb (b) junction (c) switch (d) resistor
26. 26.True or false: a circle with A inside is the symbol for a cell. (a) False (b) True
27. 27.True or false: a circle with V inside is the symbol for a voltmeter. (a) True (b) False
28. 28.True or false: many long-short pairs is the symbol for a voltmeter. (a) True (b) False
29. 29.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) resistor (b) bulb (c) LED (d) cell
30. 30.True or false: many long-short pairs is the symbol for a bulb. (a) True (b) False
31. 31.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) switch (b) cell (c) voltmeter (d) bulb
32. 32.True or false: a circle with M inside is the symbol for a motor. (a) False (b) True
33. 33.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) LED (b) resistor (c) bulb (d) wire
34. 34.Which drawing is the symbol for a resistor? (a) a circle with an X in it (b) a circle with a cross (c) a small empty box (d) many long-short pairs
35. 35.Which drawing is the symbol for a capacitor? (a) two or more cell symbols (b) two equal parallel lines (c) a straight line (d) triangle, bar and arrows
36. 36.Which drawing is the symbol for an LED? (a) two or more cell symbols (b) a long and a short line (c) a line lifted at a gap (d) triangle, bar and arrows
37. 37.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) battery (b) diode (c) bulb (d) switch
38. 38.True or false: many long-short pairs is the symbol for an LED. (a) True (b) False
39. 39.True or false: a circle with an X in it is the symbol for a diode. (a) True (b) False
40. 40.Which drawing is the symbol for a switch? (a) triangle against a bar (b) a circle with a cross (c) a line lifted at a gap (d) a circle with M inside

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