Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 911 · 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 switch? (a) triangle against a bar (b) a line lifted at a gap (c) a circle with A inside (d) a plain rectangle
2. 2.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) cell (b) switch (c) voltmeter (d) junction
3. 3.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) symbols are heavier (c) quick and clear for all (d) to hide the circuit
4. 4.Which drawing is the symbol for a bulb? (a) a small empty box (b) a line lifted at a gap (c) many long-short pairs (d) a circle with a cross
5. 5.True or false: a straight line is the symbol for an ammeter. (a) True (b) False
6. 6.True or false: one tall, one short bar is the symbol for a switch. (a) False (b) True
7. 7.Which drawing is the symbol for a motor? (a) a dot where wires meet (b) a straight line (c) a circle with M inside (d) a plain rectangle
8. 8.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) battery (b) motor (c) ammeter (d) LED
9. 9.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) bulb (b) LED (c) motor (d) switch
10. 10.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) diode (b) bulb (c) cell (d) voltmeter
11. 11.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) LED (b) cell (c) motor (d) battery
12. 12.Which drawing is the symbol for a bulb? (a) two or more cell symbols (b) a straight line (c) a small empty box (d) a circle with an X in it
13. 13.Which drawing is the symbol for a capacitor? (a) a small empty box (b) two equal parallel lines (c) a circle with M inside (d) a line lifted at a gap
14. 14.True or false: a small empty box is the symbol for a switch. (a) False (b) True
15. 15.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) diode (b) resistor (c) cell (d) junction
16. 16.True or false: a circle with a cross is the symbol for a battery. (a) False (b) True
17. 17.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) dotted circles (c) straight lines (d) little stars
18. 18.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) ammeter (b) diode (c) cell (d) battery
19. 19.Which drawing is the symbol for a diode? (a) triangle against a bar (b) a straight line (c) triangle, bar and arrows (d) two equal parallel lines
20. 20.True or false: triangle, bar and arrows is the symbol for a bulb. (a) False (b) True
21. 21.True or false: a dot where wires meet is the symbol for a voltmeter. (a) True (b) False
22. 22.Which drawing is the symbol for an LED? (a) a circle with M inside (b) a dot where wires meet (c) a long and a short line (d) triangle, bar and arrows
23. 23.Which drawing is the symbol for a junction? (a) a small empty box (b) a dot where wires meet (c) a circle with V inside (d) a circle with an X in it
24. 24.True or false: two equal parallel lines is the symbol for a capacitor. (a) True (b) False
25. 25.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the shorter line (c) the longer line (d) neither line
26. 26.True or false: two or more cell symbols is the symbol for a bulb. (a) False (b) True
27. 27.Which drawing is the symbol for a resistor? (a) a plain rectangle (b) a circle with A inside (c) a line lifted at a gap (d) a long and a short line
28. 28.True or false: a small empty box is the symbol for an ammeter. (a) False (b) True
29. 29.True or false: a circle with a cross is the symbol for a diode. (a) False (b) True
30. 30.Which drawing is the symbol for an ammeter? (a) two equal parallel lines (b) triangle against a bar (c) a circle with A inside (d) a long and a short line
31. 31.✏️ In a circuit diagram, which part is drawn as a straight line? (a) diode (b) wire (c) switch (d) bulb
32. 32.Which drawing is the symbol for a wire? (a) a straight line (b) triangle, bar and arrows (c) many long-short pairs (d) a circle with a cross
33. 33.True or false: a circle with M inside is the symbol for an ammeter. (a) True (b) False
34. 34.Which drawing is the symbol for a battery? (a) two or more cell symbols (b) a circle with A inside (c) a circle with V inside (d) a dot where wires meet
35. 35.True or false: triangle, bar and arrows is the symbol for a wire. (a) True (b) False
36. 36.Which drawing is the symbol for a resistor? (a) triangle, bar and arrows (b) a circle with an X in it (c) a small empty box (d) one tall, one short bar
37. 37.True or false: a circle with A inside is the symbol for an ammeter. (a) True (b) False
38. 38.True or false: one tall, one short bar is the symbol for a voltmeter. (a) False (b) True
39. 39.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) diode (b) voltmeter (c) capacitor (d) junction
40. 40.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) resistor (b) cell (c) motor (d) battery

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