Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 420 · 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 dot where wires meet is the symbol for a junction. (a) False (b) True
2. 2.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) switch (b) junction (c) cell (d) motor
3. 3.Which drawing is the symbol for a bulb? (a) a circle with an X in it (b) triangle, bar and arrows (c) triangle against a bar (d) one tall, one short bar
4. 4.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) quick and clear for all (c) to make it colourful (d) symbols are heavier
5. 5.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) LED (b) ammeter (c) voltmeter (d) resistor
6. 6.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) wire (b) cell (c) junction (d) capacitor
7. 7.Which drawing is the symbol for a wire? (a) one tall, one short bar (b) a circle with A inside (c) a circle with V inside (d) a straight line
8. 8.True or false: a small empty box is the symbol for a wire. (a) True (b) False
9. 9.Which drawing is the symbol for an LED? (a) a dot where wires meet (b) two or more cell symbols (c) triangle, bar and arrows (d) a straight line
10. 10.True or false: a long and a short line is the symbol for a cell. (a) False (b) True
11. 11.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) neither line (c) both lines (d) the longer line
12. 12.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) motor (b) battery (c) resistor (d) junction
13. 13.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) junction (b) switch (c) wire (d) battery
14. 14.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) wire (b) junction (c) resistor (d) battery
15. 15.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) junction (b) capacitor (c) battery (d) switch
16. 16.Which drawing is the symbol for a diode? (a) triangle against a bar (b) two or more cell symbols (c) a plain rectangle (d) a long and a short line
17. 17.Which drawing is the symbol for a battery? (a) a long and a short line (b) a circle with a cross (c) a small empty box (d) many long-short pairs
18. 18.Which drawing is the symbol for a motor? (a) one tall, one short bar (b) a circle with M inside (c) two or more cell symbols (d) a circle with a cross
19. 19.Which drawing is the symbol for a junction? (a) a long and a short line (b) many long-short pairs (c) a dot where wires meet (d) a circle with M inside
20. 20.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) wavy lines (c) little stars (d) dotted circles
21. 21.True or false: many long-short pairs is the symbol for a resistor. (a) True (b) False
22. 22.True or false: triangle against a bar is the symbol for a diode. (a) False (b) True
23. 23.Which drawing is the symbol for an ammeter? (a) a circle with A inside (b) two or more cell symbols (c) triangle, bar and arrows (d) many long-short pairs
24. 24.True or false: a circle with M inside is the symbol for a motor. (a) False (b) True
25. 25.True or false: triangle, bar and arrows is the symbol for an LED. (a) True (b) False
26. 26.Which drawing is the symbol for a cell? (a) a small empty box (b) a dot where wires meet (c) a circle with V inside (d) a long and a short line
27. 27.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) LED (b) battery (c) capacitor (d) cell
28. 28.True or false: a circle with M inside is the symbol for a switch. (a) True (b) False
29. 29.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) voltmeter (b) switch (c) motor (d) capacitor
30. 30.Which drawing is the symbol for a capacitor? (a) a small empty box (b) triangle, bar and arrows (c) triangle against a bar (d) two equal parallel lines
31. 31.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) LED (b) cell (c) resistor (d) bulb
32. 32.True or false: a circle with a cross is the symbol for a bulb. (a) False (b) True
33. 33.Which drawing is the symbol for a bulb? (a) one tall, one short bar (b) a circle with a cross (c) a small empty box (d) many long-short pairs
34. 34.True or false: two or more cell symbols is the symbol for a battery. (a) True (b) False
35. 35.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) capacitor (b) cell (c) ammeter (d) diode
36. 36.True or false: a circle with A inside is the symbol for an ammeter. (a) True (b) False
37. 37.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) junction (b) ammeter (c) motor (d) bulb
38. 38.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) cell (b) junction (c) voltmeter (d) motor
39. 39.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) cell (b) LED (c) switch (d) voltmeter
40. 40.True or false: a long and a short line is the symbol for a switch. (a) True (b) False

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids