Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 245 · 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) symbols are heavier (b) to hide the circuit (c) quick and clear for all (d) to make it colourful
2. 2.Which drawing is the symbol for a battery? (a) a small empty box (b) a circle with A inside (c) many long-short pairs (d) a circle with M inside
3. 3.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) ammeter (b) diode (c) LED (d) capacitor
4. 4.Which drawing is the symbol for a capacitor? (a) two equal parallel lines (b) a line lifted at a gap (c) triangle against a bar (d) a circle with V inside
5. 5.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) voltmeter (b) bulb (c) ammeter (d) LED
6. 6.True or false: a circle with an X in it is the symbol for a bulb. (a) True (b) False
7. 7.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) little stars (c) dotted circles (d) straight lines
8. 8.Which drawing is the symbol for a junction? (a) a circle with V inside (b) a circle with A inside (c) triangle, bar and arrows (d) a dot where wires meet
9. 9.True or false: a long and a short line is the symbol for an LED. (a) True (b) False
10. 10.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) both lines (c) neither line (d) the shorter line
11. 11.Which drawing is the symbol for a battery? (a) triangle, bar and arrows (b) two or more cell symbols (c) a plain rectangle (d) a straight line
12. 12.Which drawing is the symbol for a resistor? (a) a dot where wires meet (b) a long and a short line (c) a circle with A inside (d) a plain rectangle
13. 13.True or false: a dot where wires meet is the symbol for a junction. (a) True (b) False
14. 14.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) battery (b) junction (c) diode (d) ammeter
15. 15.Which drawing is the symbol for a motor? (a) a small empty box (b) a circle with a cross (c) a circle with M inside (d) a circle with A inside
16. 16.Which drawing is the symbol for a bulb? (a) one tall, one short bar (b) a straight line (c) many long-short pairs (d) a circle with a cross
17. 17.True or false: a long and a short line is the symbol for a switch. (a) True (b) False
18. 18.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) diode (b) bulb (c) switch (d) LED
19. 19.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) motor (b) ammeter (c) cell (d) switch
20. 20.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) junction (b) ammeter (c) cell (d) switch
21. 21.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) LED (b) battery (c) wire (d) resistor
22. 22.True or false: triangle against a bar is the symbol for a diode. (a) True (b) False
23. 23.True or false: a small empty box is the symbol for a resistor. (a) False (b) True
24. 24.Which drawing is the symbol for a wire? (a) a straight line (b) a line lifted at a gap (c) triangle, bar and arrows (d) a small empty box
25. 25.True or false: a circle with V inside is the symbol for a resistor. (a) False (b) True
26. 26.Which drawing is the symbol for a cell? (a) a circle with an X in it (b) a circle with A inside (c) one tall, one short bar (d) a plain rectangle
27. 27.True or false: a long and a short line is the symbol for a cell. (a) False (b) True
28. 28.Which drawing is the symbol for an LED? (a) a circle with V inside (b) a circle with M inside (c) a circle with an X in it (d) triangle, bar and arrows
29. 29.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) junction (b) wire (c) ammeter (d) cell
30. 30.✏️ In a circuit diagram, which part is drawn as a straight line? (a) motor (b) wire (c) resistor (d) diode
31. 31.True or false: two equal parallel lines is the symbol for a capacitor. (a) False (b) True
32. 32.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) cell (b) diode (c) ammeter (d) resistor
33. 33.True or false: triangle against a bar is the symbol for a bulb. (a) False (b) True
34. 34.Which drawing is the symbol for a diode? (a) triangle against a bar (b) one tall, one short bar (c) a circle with A inside (d) a line lifted at a gap
35. 35.True or false: a dot where wires meet is the symbol for an ammeter. (a) True (b) False
36. 36.True or false: a plain rectangle is the symbol for an ammeter. (a) False (b) True
37. 37.True or false: two equal parallel lines is the symbol for a motor. (a) True (b) False
38. 38.True or false: a line lifted at a gap is the symbol for a switch. (a) False (b) True
39. 39.True or false: one tall, one short bar is the symbol for a cell. (a) True (b) False
40. 40.True or false: a circle with M inside is the symbol for a capacitor. (a) False (b) True

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