Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 740 · 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 small empty box is the symbol for a diode. (a) True (b) False
2. 2.True or false: a circle with an X in it is the symbol for a bulb. (a) True (b) False
3. 3.Which drawing is the symbol for a resistor? (a) a line lifted at a gap (b) two equal parallel lines (c) a dot where wires meet (d) a plain rectangle
4. 4.True or false: a small empty box is the symbol for a voltmeter. (a) False (b) True
5. 5.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) voltmeter (b) resistor (c) cell (d) LED
6. 6.Which drawing is the symbol for a voltmeter? (a) a circle with V inside (b) a circle with M inside (c) many long-short pairs (d) two or more cell symbols
7. 7.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) symbols are heavier (c) quick and clear for all (d) to make it colourful
8. 8.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) the shorter line (c) both lines (d) the longer line
9. 9.True or false: a circle with V inside is the symbol for a voltmeter. (a) False (b) True
10. 10.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) bulb (b) junction (c) ammeter (d) resistor
11. 11.True or false: a circle with a cross is the symbol for a bulb. (a) False (b) True
12. 12.Which drawing is the symbol for a bulb? (a) two or more cell symbols (b) many long-short pairs (c) a small empty box (d) a circle with an X in it
13. 13.Which drawing is the symbol for a switch? (a) one tall, one short bar (b) two equal parallel lines (c) a line lifted at a gap (d) many long-short pairs
14. 14.Which drawing is the symbol for a wire? (a) a small empty box (b) many long-short pairs (c) a straight line (d) a circle with V inside
15. 15.True or false: a dot where wires meet is the symbol for a junction. (a) False (b) True
16. 16.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) dotted circles (c) wavy lines (d) straight lines
17. 17.Which drawing is the symbol for a junction? (a) a circle with A inside (b) a line lifted at a gap (c) a dot where wires meet (d) a plain rectangle
18. 18.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) bulb (b) capacitor (c) cell (d) motor
19. 19.True or false: a small empty box is the symbol for a bulb. (a) False (b) True
20. 20.Which drawing is the symbol for a motor? (a) a circle with V inside (b) a plain rectangle (c) a circle with M inside (d) two equal parallel lines
21. 21.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) LED (b) motor (c) battery (d) cell
22. 22.✏️ In a circuit diagram, which part is drawn as a straight line? (a) switch (b) voltmeter (c) wire (d) cell
23. 23.True or false: two or more cell symbols is the symbol for an LED. (a) True (b) False
24. 24.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) wire (b) motor (c) cell (d) voltmeter
25. 25.True or false: a long and a short line is the symbol for a battery. (a) True (b) False
26. 26.Which drawing is the symbol for a diode? (a) a circle with M inside (b) triangle against a bar (c) a long and a short line (d) two equal parallel lines
27. 27.Which drawing is the symbol for a bulb? (a) a circle with M inside (b) a circle with a cross (c) two equal parallel lines (d) triangle, bar and arrows
28. 28.Which drawing is the symbol for a cell? (a) a small empty box (b) one tall, one short bar (c) two equal parallel lines (d) a circle with A inside
29. 29.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) battery (b) motor (c) resistor (d) switch
30. 30.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) cell (b) voltmeter (c) switch (d) resistor
31. 31.True or false: a circle with A inside is the symbol for an LED. (a) False (b) True
32. 32.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) diode (b) LED (c) cell (d) battery
33. 33.Which drawing is the symbol for an ammeter? (a) a dot where wires meet (b) a circle with A inside (c) one tall, one short bar (d) two equal parallel lines
34. 34.True or false: a dot where wires meet is the symbol for a diode. (a) False (b) True
35. 35.True or false: two equal parallel lines is the symbol for a capacitor. (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 A inside is the symbol for an ammeter. (a) False (b) True
38. 38.True or false: two equal parallel lines is the symbol for a bulb. (a) True (b) False
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 plain rectangle? (a) capacitor (b) diode (c) resistor (d) cell

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