Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 390 · 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 an X in it? (a) resistor (b) switch (c) diode (d) bulb
2. 2.True or false: a plain rectangle is the symbol for a resistor. (a) True (b) False
3. 3.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) to make it colourful (c) to hide the circuit (d) quick and clear for all
4. 4.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) cell (b) resistor (c) ammeter (d) bulb
5. 5.True or false: a circle with a cross is the symbol for a bulb. (a) False (b) True
6. 6.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) motor (b) cell (c) junction (d) battery
7. 7.True or false: a circle with an X in it is the symbol for a bulb. (a) False (b) True
8. 8.True or false: a circle with V inside is the symbol for a capacitor. (a) True (b) False
9. 9.Which drawing is the symbol for a junction? (a) a circle with A inside (b) one tall, one short bar (c) a dot where wires meet (d) a circle with a cross
10. 10.True or false: triangle against a bar is the symbol for a diode. (a) False (b) True
11. 11.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) dotted circles (c) straight lines (d) little stars
12. 12.Which drawing is the symbol for a diode? (a) many long-short pairs (b) triangle against a bar (c) a straight line (d) a dot where wires meet
13. 13.True or false: a long and a short line is the symbol for an LED. (a) False (b) True
14. 14.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) LED (b) switch (c) capacitor (d) wire
15. 15.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) neither line (c) both lines (d) the shorter line
16. 16.True or false: many long-short pairs is the symbol for a capacitor. (a) False (b) True
17. 17.Which drawing is the symbol for a capacitor? (a) many long-short pairs (b) a circle with A inside (c) two equal parallel lines (d) a circle with a cross
18. 18.Which drawing is the symbol for a resistor? (a) many long-short pairs (b) a plain rectangle (c) a dot where wires meet (d) triangle, bar and arrows
19. 19.Which drawing is the symbol for an ammeter? (a) a circle with A inside (b) a plain rectangle (c) a circle with a cross (d) a long and a short line
20. 20.True or false: many long-short pairs is the symbol for a battery. (a) False (b) True
21. 21.True or false: a long and a short line is the symbol for a cell. (a) False (b) True
22. 22.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) junction (b) bulb (c) diode (d) battery
23. 23.Which drawing is the symbol for a switch? (a) two or more cell symbols (b) a circle with a cross (c) a line lifted at a gap (d) a circle with A inside
24. 24.Which drawing is the symbol for a bulb? (a) a plain rectangle (b) many long-short pairs (c) a circle with an X in it (d) a circle with M inside
25. 25.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) LED (b) battery (c) junction (d) diode
26. 26.Which drawing is the symbol for a wire? (a) a straight line (b) two or more cell symbols (c) a long and a short line (d) a dot where wires meet
27. 27.True or false: a small empty box is the symbol for a resistor. (a) False (b) True
28. 28.True or false: a straight line is the symbol for a wire. (a) False (b) True
29. 29.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) junction (b) cell (c) LED (d) battery
30. 30.True or false: triangle, bar and arrows is the symbol for a diode. (a) True (b) False
31. 31.True or false: a circle with a cross is the symbol for a motor. (a) False (b) True
32. 32.Which drawing is the symbol for a resistor? (a) two or more cell symbols (b) a circle with a cross (c) a circle with A inside (d) a small empty box
33. 33.Which drawing is the symbol for a bulb? (a) two equal parallel lines (b) a dot where wires meet (c) a circle with M inside (d) a circle with a cross
34. 34.Which drawing is the symbol for a motor? (a) two or more cell symbols (b) a circle with an X in it (c) a circle with a cross (d) a circle with M inside
35. 35.✏️ In a circuit diagram, which part is drawn as a straight line? (a) wire (b) LED (c) bulb (d) motor
36. 36.True or false: a line lifted at a gap is the symbol for a switch. (a) True (b) False
37. 37.True or false: a circle with V inside is the symbol for a voltmeter. (a) False (b) True
38. 38.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) motor (b) junction (c) wire (d) resistor
39. 39.True or false: a circle with A inside is the symbol for an LED. (a) True (b) False
40. 40.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) bulb (b) LED (c) diode (d) resistor

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