Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 631 · 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.True or false: a dot where wires meet is the symbol for a junction. (a) True (b) False
2. 2.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) the longer line (c) both lines (d) the shorter line
3. 3.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) resistor (b) voltmeter (c) motor (d) wire
4. 4.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) ammeter (b) capacitor (c) cell (d) resistor
5. 5.Which drawing is the symbol for a bulb? (a) one tall, one short bar (b) many long-short pairs (c) a small empty box (d) a circle with a cross
6. 6.Which drawing is the symbol for a cell? (a) a dot where wires meet (b) a plain rectangle (c) one tall, one short bar (d) two equal parallel lines
7. 7.True or false: a circle with a cross is the symbol for a motor. (a) True (b) False
8. 8.True or false: a dot where wires meet is the symbol for an LED. (a) True (b) False
9. 9.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) diode (b) bulb (c) junction (d) battery
10. 10.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) wavy lines (c) dotted circles (d) little stars
11. 11.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) battery (b) LED (c) diode (d) ammeter
12. 12.Which drawing is the symbol for a battery? (a) a plain rectangle (b) a long and a short line (c) many long-short pairs (d) a small empty box
13. 13.Which drawing is the symbol for a switch? (a) a circle with V inside (b) two or more cell symbols (c) a line lifted at a gap (d) a straight line
14. 14.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) battery (b) LED (c) ammeter (d) switch
15. 15.True or false: a small empty box is the symbol for a cell. (a) False (b) True
16. 16.True or false: a circle with V inside is the symbol for an ammeter. (a) False (b) True
17. 17.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) junction (b) resistor (c) switch (d) diode
18. 18.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) capacitor (b) resistor (c) switch (d) battery
19. 19.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) bulb (b) capacitor (c) motor (d) junction
20. 20.True or false: triangle against a bar is the symbol for a diode. (a) False (b) True
21. 21.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) cell (b) junction (c) motor (d) bulb
22. 22.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) junction (b) bulb (c) switch (d) resistor
23. 23.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) motor (b) bulb (c) cell (d) diode
24. 24.Which drawing is the symbol for a resistor? (a) a dot where wires meet (b) many long-short pairs (c) a plain rectangle (d) a circle with A inside
25. 25.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) quick and clear for all (c) to hide the circuit (d) to make it colourful
26. 26.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) voltmeter (b) cell (c) bulb (d) switch
27. 27.Which drawing is the symbol for an ammeter? (a) a circle with an X in it (b) one tall, one short bar (c) many long-short pairs (d) a circle with A inside
28. 28.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) battery (b) switch (c) cell (d) wire
29. 29.Which drawing is the symbol for a capacitor? (a) a circle with M inside (b) a small empty box (c) triangle, bar and arrows (d) two equal parallel lines
30. 30.Which drawing is the symbol for a diode? (a) a circle with M inside (b) a straight line (c) a small empty box (d) triangle against a bar
31. 31.True or false: two equal parallel lines is the symbol for a cell. (a) True (b) False
32. 32.True or false: a circle with an X in it is the symbol for a bulb. (a) False (b) True
33. 33.Which drawing is the symbol for a battery? (a) a circle with V inside (b) a circle with M inside (c) two or more cell symbols (d) a circle with an X in it
34. 34.Which drawing is the symbol for a cell? (a) a long and a short line (b) a line lifted at a gap (c) a circle with A inside (d) a dot where wires meet
35. 35.True or false: a line lifted at a gap is the symbol for an ammeter. (a) True (b) False
36. 36.True or false: a small empty box is the symbol for an LED. (a) True (b) False
37. 37.True or false: a circle with an X in it is the symbol for a motor. (a) False (b) True
38. 38.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) diode (b) capacitor (c) cell (d) LED
39. 39.True or false: a plain rectangle is the symbol for a resistor. (a) False (b) True
40. 40.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) bulb (b) capacitor (c) battery (d) ammeter

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