Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 646 · 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 cell symbol, which line is the + terminal? (a) the shorter line (b) neither line (c) the longer line (d) both lines
2. 2.True or false: one tall, one short bar is the symbol for a cell. (a) False (b) True
3. 3.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) bulb (b) LED (c) battery (d) cell
4. 4.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) to hide the circuit (c) symbols are heavier (d) to make it colourful
5. 5.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) LED (b) switch (c) cell (d) junction
6. 6.True or false: a line lifted at a gap is the symbol for an ammeter. (a) True (b) False
7. 7.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) ammeter (b) cell (c) junction (d) diode
8. 8.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) switch (b) resistor (c) wire (d) bulb
9. 9.True or false: a straight line is the symbol for an LED. (a) True (b) False
10. 10.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) motor (b) switch (c) capacitor (d) voltmeter
11. 11.Which drawing is the symbol for an LED? (a) many long-short pairs (b) triangle, bar and arrows (c) a circle with a cross (d) a long and a short line
12. 12.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) junction (b) LED (c) resistor (d) ammeter
13. 13.True or false: a plain rectangle is the symbol for a resistor. (a) False (b) True
14. 14.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) switch (b) voltmeter (c) resistor (d) LED
15. 15.True or false: triangle against a bar is the symbol for a diode. (a) False (b) True
16. 16.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) wavy lines (c) dotted circles (d) straight lines
17. 17.Which drawing is the symbol for a junction? (a) a circle with a cross (b) a dot where wires meet (c) a straight line (d) a circle with V inside
18. 18.Which drawing is the symbol for a voltmeter? (a) a straight line (b) many long-short pairs (c) one tall, one short bar (d) a circle with V inside
19. 19.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) battery (b) cell (c) diode (d) LED
20. 20.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) wire (b) cell (c) battery (d) diode
21. 21.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) diode (b) battery (c) junction (d) bulb
22. 22.True or false: a circle with A inside is the symbol for an ammeter. (a) False (b) True
23. 23.Which drawing is the symbol for a resistor? (a) many long-short pairs (b) a dot where wires meet (c) a circle with an X in it (d) a small empty box
24. 24.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) bulb (b) junction (c) cell (d) ammeter
25. 25.True or false: many long-short pairs is the symbol for a battery. (a) True (b) False
26. 26.True or false: a small empty box is the symbol for a resistor. (a) False (b) True
27. 27.Which drawing is the symbol for a switch? (a) a line lifted at a gap (b) a circle with an X in it (c) triangle, bar and arrows (d) a dot where wires meet
28. 28.True or false: two or more cell symbols is the symbol for a wire. (a) True (b) False
29. 29.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) switch (b) voltmeter (c) capacitor (d) diode
30. 30.True or false: two equal parallel lines is the symbol for a wire. (a) False (b) True
31. 31.Which drawing is the symbol for a capacitor? (a) triangle, bar and arrows (b) a circle with M inside (c) two equal parallel lines (d) a plain rectangle
32. 32.True or false: two or more cell symbols is the symbol for a battery. (a) False (b) True
33. 33.Which drawing is the symbol for a bulb? (a) a straight line (b) many long-short pairs (c) a circle with A inside (d) a circle with an X in it
34. 34.Which drawing is the symbol for an ammeter? (a) a line lifted at a gap (b) many long-short pairs (c) a circle with A inside (d) triangle against a bar
35. 35.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) bulb (b) capacitor (c) motor (d) ammeter
36. 36.Which drawing is the symbol for a diode? (a) two or more cell symbols (b) one tall, one short bar (c) triangle against a bar (d) a circle with an X in it
37. 37.Which drawing is the symbol for a cell? (a) triangle against a bar (b) a circle with a cross (c) a long and a short line (d) a plain rectangle
38. 38.True or false: a long and a short line is the symbol for a voltmeter. (a) False (b) True
39. 39.True or false: a circle with V inside is the symbol for a voltmeter. (a) False (b) True
40. 40.True or false: a circle with A inside is the symbol for a battery. (a) False (b) True

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