Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 501 · 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 small empty box? (a) motor (b) voltmeter (c) resistor (d) junction
2. 2.True or false: triangle, bar and arrows is the symbol for a capacitor. (a) True (b) False
3. 3.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the shorter line (c) the longer line (d) neither line
4. 4.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) wire (b) cell (c) ammeter (d) resistor
5. 5.True or false: a circle with M inside is the symbol for a switch. (a) True (b) False
6. 6.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) bulb (b) motor (c) battery (d) cell
7. 7.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) wavy lines (c) little stars (d) straight lines
8. 8.Which drawing is the symbol for a junction? (a) many long-short pairs (b) two or more cell symbols (c) a dot where wires meet (d) one tall, one short bar
9. 9.True or false: two or more cell symbols is the symbol for a diode. (a) True (b) False
10. 10.Which drawing is the symbol for a diode? (a) triangle, bar and arrows (b) a line lifted at a gap (c) two or more cell symbols (d) triangle against a bar
11. 11.True or false: a plain rectangle is the symbol for a resistor. (a) False (b) True
12. 12.Which drawing is the symbol for a capacitor? (a) two equal parallel lines (b) many long-short pairs (c) a line lifted at a gap (d) one tall, one short bar
13. 13.True or false: two equal parallel lines is the symbol for a capacitor. (a) False (b) True
14. 14.Which drawing is the symbol for a wire? (a) a circle with A inside (b) a straight line (c) a long and a short line (d) one tall, one short bar
15. 15.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) resistor (b) battery (c) switch (d) capacitor
16. 16.✏️ 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
17. 17.True or false: a line lifted at a gap is the symbol for a switch. (a) True (b) False
18. 18.True or false: a long and a short line is the symbol for a cell. (a) True (b) False
19. 19.True or false: a small empty box is the symbol for a resistor. (a) False (b) True
20. 20.Which drawing is the symbol for a motor? (a) triangle, bar and arrows (b) a circle with M inside (c) a dot where wires meet (d) a straight line
21. 21.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) voltmeter (b) battery (c) wire (d) junction
22. 22.Which drawing is the symbol for a switch? (a) a dot where wires meet (b) a circle with A inside (c) two or more cell symbols (d) a line lifted at a gap
23. 23.True or false: two equal parallel lines is the symbol for an ammeter. (a) False (b) True
24. 24.True or false: two or more cell symbols is the symbol for a battery. (a) True (b) False
25. 25.Which drawing is the symbol for a bulb? (a) two or more cell symbols (b) a circle with A inside (c) a long and a short line (d) a circle with an X in it
26. 26.✏️ In a circuit diagram, which part is drawn as a straight line? (a) switch (b) wire (c) battery (d) ammeter
27. 27.True or false: many long-short pairs is the symbol for a diode. (a) True (b) False
28. 28.Which drawing is the symbol for a bulb? (a) a circle with a cross (b) triangle against a bar (c) a long and a short line (d) a plain rectangle
29. 29.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) motor (b) switch (c) diode (d) voltmeter
30. 30.Which drawing is the symbol for a voltmeter? (a) a circle with A inside (b) a small empty box (c) a circle with V inside (d) a circle with M inside
31. 31.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) capacitor (b) junction (c) bulb (d) LED
32. 32.True or false: a circle with V inside is the symbol for a diode. (a) False (b) True
33. 33.True or false: a circle with a cross is the symbol for a bulb. (a) False (b) True
34. 34.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) bulb (b) LED (c) cell (d) diode
35. 35.True or false: a dot where wires meet is the symbol for an ammeter. (a) True (b) False
36. 36.True or false: a long and a short line is the symbol for a diode. (a) True (b) False
37. 37.True or false: triangle, bar and arrows is the symbol for a cell. (a) False (b) True
38. 38.True or false: a circle with A inside is the symbol for a cell. (a) True (b) False
39. 39.True or false: triangle against a bar is the symbol for a switch. (a) False (b) True
40. 40.Which drawing is the symbol for an LED? (a) triangle, bar and arrows (b) a circle with A inside (c) a long and a short line (d) a circle with an X in it

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