Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 150 · 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.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) dotted circles (c) wavy lines (d) straight lines
2. 2.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) voltmeter (b) resistor (c) cell (d) switch
3. 3.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) ammeter (b) bulb (c) wire (d) cell
4. 4.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) quick and clear for all (c) to make it colourful (d) to hide the circuit
5. 5.Which drawing is the symbol for a resistor? (a) a circle with an X in it (b) two equal parallel lines (c) many long-short pairs (d) a small empty box
6. 6.True or false: a straight line is the symbol for a wire. (a) False (b) True
7. 7.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) capacitor (b) motor (c) resistor (d) bulb
8. 8.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) LED (b) cell (c) switch (d) bulb
9. 9.Which drawing is the symbol for a switch? (a) a line lifted at a gap (b) one tall, one short bar (c) two or more cell symbols (d) a straight line
10. 10.Which drawing is the symbol for a cell? (a) triangle, bar and arrows (b) a circle with A inside (c) one tall, one short bar (d) a circle with an X in it
11. 11.Which drawing is the symbol for an ammeter? (a) a circle with V inside (b) two equal parallel lines (c) a circle with a cross (d) a circle with A inside
12. 12.Which drawing is the symbol for an LED? (a) triangle, bar and arrows (b) a circle with a cross (c) a plain rectangle (d) one tall, one short bar
13. 13.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) motor (b) ammeter (c) voltmeter (d) diode
14. 14.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) junction (b) ammeter (c) wire (d) diode
15. 15.True or false: a line lifted at a gap is the symbol for a capacitor. (a) False (b) True
16. 16.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) motor (b) switch (c) cell (d) bulb
17. 17.True or false: one tall, one short bar is the symbol for a cell. (a) True (b) False
18. 18.True or false: two or more cell symbols is the symbol for a battery. (a) True (b) False
19. 19.Which drawing is the symbol for a voltmeter? (a) a line lifted at a gap (b) a circle with V inside (c) triangle against a bar (d) one tall, one short bar
20. 20.True or false: two equal parallel lines is the symbol for an LED. (a) False (b) True
21. 21.True or false: two equal parallel lines is the symbol for a capacitor. (a) True (b) False
22. 22.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) motor (b) wire (c) switch (d) resistor
23. 23.True or false: a long and a short line is the symbol for a switch. (a) True (b) False
24. 24.Which drawing is the symbol for a capacitor? (a) two equal parallel lines (b) a circle with V inside (c) a line lifted at a gap (d) one tall, one short bar
25. 25.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) motor (b) capacitor (c) ammeter (d) wire
26. 26.True or false: a long and a short line is the symbol for a capacitor. (a) False (b) True
27. 27.Which drawing is the symbol for a cell? (a) a dot where wires meet (b) a long and a short line (c) many long-short pairs (d) a small empty box
28. 28.True or false: a small empty box is the symbol for a resistor. (a) True (b) False
29. 29.True or false: a circle with an X in it is the symbol for a bulb. (a) True (b) False
30. 30.True or false: triangle against a bar is the symbol for a battery. (a) True (b) False
31. 31.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) the shorter line (c) both lines (d) neither line
32. 32.✏️ In a circuit diagram, which part is drawn as a straight line? (a) voltmeter (b) switch (c) wire (d) capacitor
33. 33.True or false: many long-short pairs is the symbol for a bulb. (a) True (b) False
34. 34.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) cell (b) switch (c) LED (d) junction
35. 35.Which drawing is the symbol for a motor? (a) triangle, bar and arrows (b) a circle with M inside (c) many long-short pairs (d) a circle with an X in it
36. 36.True or false: triangle, bar and arrows is the symbol for a wire. (a) True (b) False
37. 37.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) battery (b) bulb (c) LED (d) diode
38. 38.True or false: many long-short pairs is the symbol for a diode. (a) True (b) False
39. 39.True or false: two equal parallel lines is the symbol for a voltmeter. (a) False (b) True
40. 40.True or false: a circle with an X in it is the symbol for a resistor. (a) False (b) True

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