Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 745 · 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 bulb? (a) a circle with an X in it (b) a circle with V inside (c) a long and a short line (d) a straight line
2. 2.Which drawing is the symbol for a wire? (a) a circle with an X in it (b) two equal parallel lines (c) a straight line (d) a dot where wires meet
3. 3.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the shorter line (c) neither line (d) the longer line
4. 4.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) motor (b) cell (c) ammeter (d) wire
5. 5.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) battery (b) wire (c) motor (d) cell
6. 6.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) LED (b) bulb (c) junction (d) motor
7. 7.True or false: triangle against a bar is the symbol for a diode. (a) False (b) True
8. 8.True or false: two or more cell symbols is the symbol for a battery. (a) True (b) False
9. 9.Which drawing is the symbol for a capacitor? (a) a circle with a cross (b) a circle with A inside (c) a line lifted at a gap (d) two equal parallel lines
10. 10.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) battery (b) LED (c) switch (d) resistor
11. 11.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) LED (b) switch (c) voltmeter (d) wire
12. 12.✏️ 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
13. 13.Which drawing is the symbol for a voltmeter? (a) two or more cell symbols (b) a line lifted at a gap (c) a small empty box (d) a circle with V inside
14. 14.Which drawing is the symbol for a resistor? (a) a circle with A inside (b) two or more cell symbols (c) a plain rectangle (d) a line lifted at a gap
15. 15.True or false: a circle with a cross is the symbol for a motor. (a) False (b) True
16. 16.Which drawing is the symbol for a junction? (a) a dot where wires meet (b) a plain rectangle (c) triangle against a bar (d) many long-short pairs
17. 17.Which drawing is the symbol for a battery? (a) a long and a short line (b) many long-short pairs (c) a line lifted at a gap (d) a circle with M inside
18. 18.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) little stars (c) dotted circles (d) straight lines
19. 19.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) capacitor (b) wire (c) bulb (d) junction
20. 20.Which drawing is the symbol for a diode? (a) one tall, one short bar (b) a circle with an X in it (c) triangle against a bar (d) a line lifted at a gap
21. 21.True or false: a line lifted at a gap is the symbol for a switch. (a) True (b) False
22. 22.Which drawing is the symbol for an LED? (a) a circle with an X in it (b) two equal parallel lines (c) triangle, bar and arrows (d) a circle with A inside
23. 23.True or false: many long-short pairs is the symbol for a cell. (a) True (b) False
24. 24.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) capacitor (b) motor (c) battery (d) wire
25. 25.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) LED (b) cell (c) battery (d) capacitor
26. 26.True or false: a long and a short line is the symbol for a switch. (a) True (b) False
27. 27.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) resistor (b) diode (c) LED (d) wire
28. 28.True or false: a circle with A inside is the symbol for a capacitor. (a) False (b) True
29. 29.True or false: a small empty box is the symbol for a resistor. (a) True (b) False
30. 30.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) junction (b) ammeter (c) switch (d) battery
31. 31.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) diode (b) battery (c) voltmeter (d) bulb
32. 32.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) capacitor (b) junction (c) motor (d) switch
33. 33.Which drawing is the symbol for a motor? (a) a small empty box (b) a circle with an X in it (c) a circle with A inside (d) a circle with M inside
34. 34.True or false: a circle with A inside is the symbol for an ammeter. (a) False (b) True
35. 35.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) cell (b) junction (c) wire (d) battery
36. 36.True or false: a line lifted at a gap is the symbol for a resistor. (a) False (b) True
37. 37.True or false: two equal parallel lines is the symbol for a capacitor. (a) True (b) False
38. 38.True or false: one tall, one short bar is the symbol for a battery. (a) False (b) True
39. 39.True or false: a straight line is the symbol for a wire. (a) False (b) True
40. 40.True or false: two equal parallel lines is the symbol for a cell. (a) False (b) True

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