Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 857 · 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, which part is drawn as a straight line? (a) resistor (b) cell (c) switch (d) wire
2. 2.Which drawing is the symbol for a switch? (a) a straight line (b) a line lifted at a gap (c) a small empty box (d) one tall, one short bar
3. 3.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) junction (b) wire (c) capacitor (d) ammeter
4. 4.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) straight lines (c) little stars (d) wavy lines
5. 5.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) quick and clear for all (c) symbols are heavier (d) to make it colourful
6. 6.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) the longer line (c) the shorter line (d) both lines
7. 7.True or false: one tall, one short bar is the symbol for a cell. (a) True (b) False
8. 8.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) bulb (b) junction (c) ammeter (d) diode
9. 9.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) wire (b) switch (c) cell (d) LED
10. 10.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) battery (b) capacitor (c) voltmeter (d) bulb
11. 11.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) voltmeter (b) switch (c) diode (d) resistor
12. 12.Which drawing is the symbol for a diode? (a) triangle against a bar (b) two or more cell symbols (c) a circle with a cross (d) many long-short pairs
13. 13.Which drawing is the symbol for a cell? (a) a circle with a cross (b) one tall, one short bar (c) a circle with an X in it (d) a plain rectangle
14. 14.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) diode (b) LED (c) resistor (d) battery
15. 15.True or false: triangle against a bar is the symbol for a diode. (a) False (b) True
16. 16.True or false: a circle with a cross is the symbol for a bulb. (a) True (b) False
17. 17.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) motor (b) resistor (c) switch (d) wire
18. 18.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) resistor (b) bulb (c) motor (d) wire
19. 19.True or false: a small empty box is the symbol for an LED. (a) True (b) False
20. 20.True or false: a dot where wires meet is the symbol for a junction. (a) True (b) False
21. 21.True or false: a dot where wires meet is the symbol for a cell. (a) False (b) True
22. 22.Which drawing is the symbol for a wire? (a) a straight line (b) triangle, bar and arrows (c) a plain rectangle (d) many long-short pairs
23. 23.Which drawing is the symbol for a voltmeter? (a) a line lifted at a gap (b) two or more cell symbols (c) a circle with V inside (d) a dot where wires meet
24. 24.True or false: a long and a short line is the symbol for a switch. (a) True (b) False
25. 25.True or false: a small empty box is the symbol for an ammeter. (a) True (b) False
26. 26.Which drawing is the symbol for a capacitor? (a) many long-short pairs (b) a circle with V inside (c) two equal parallel lines (d) a circle with M inside
27. 27.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) capacitor (b) resistor (c) diode (d) cell
28. 28.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) ammeter (b) voltmeter (c) battery (d) diode
29. 29.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) capacitor (b) switch (c) motor (d) bulb
30. 30.True or false: a small empty box is the symbol for a resistor. (a) True (b) False
31. 31.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) switch (b) battery (c) wire (d) ammeter
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 an LED? (a) many long-short pairs (b) triangle, bar and arrows (c) a long and a short line (d) two equal parallel lines
34. 34.Which drawing is the symbol for a battery? (a) two or more cell symbols (b) a circle with V inside (c) a plain rectangle (d) a circle with an X in it
35. 35.Which drawing is the symbol for a junction? (a) a plain rectangle (b) a dot where wires meet (c) a straight line (d) two or more cell symbols
36. 36.Which drawing is the symbol for an ammeter? (a) a circle with A inside (b) a circle with M inside (c) a circle with a cross (d) triangle, bar and arrows
37. 37.True or false: triangle, bar and arrows is the symbol for a resistor. (a) False (b) True
38. 38.True or false: many long-short pairs is the symbol for an ammeter. (a) True (b) False
39. 39.True or false: two or more cell symbols is the symbol for a motor. (a) False (b) True
40. 40.Which drawing is the symbol for a resistor? (a) a circle with a cross (b) many long-short pairs (c) two equal parallel lines (d) a plain rectangle

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