Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 978 · 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.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) to make it colourful (c) quick and clear for all (d) symbols are heavier
2. 2.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) LED (b) capacitor (c) switch (d) battery
3. 3.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the shorter line (c) neither line (d) the longer line
4. 4.Which drawing is the symbol for a junction? (a) a small empty box (b) a circle with an X in it (c) a dot where wires meet (d) a plain rectangle
5. 5.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) cell (b) switch (c) battery (d) motor
6. 6.True or false: a circle with A inside is the symbol for a battery. (a) False (b) True
7. 7.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) cell (b) switch (c) diode (d) LED
8. 8.Which drawing is the symbol for a voltmeter? (a) a circle with V inside (b) one tall, one short bar (c) a line lifted at a gap (d) a circle with an X in it
9. 9.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) diode (b) ammeter (c) switch (d) battery
10. 10.Which drawing is the symbol for a battery? (a) a circle with an X in it (b) a long and a short line (c) a circle with M inside (d) two or more cell symbols
11. 11.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) voltmeter (b) wire (c) junction (d) cell
12. 12.True or false: a circle with V inside is the symbol for a capacitor. (a) False (b) True
13. 13.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) bulb (b) switch (c) wire (d) resistor
14. 14.Which drawing is the symbol for a diode? (a) two equal parallel lines (b) a long and a short line (c) triangle against a bar (d) two or more cell symbols
15. 15.Which drawing is the symbol for an ammeter? (a) a line lifted at a gap (b) a circle with M inside (c) a plain rectangle (d) a circle with A inside
16. 16.True or false: a circle with an X in it is the symbol for a bulb. (a) False (b) True
17. 17.True or false: a circle with M inside is the symbol for a motor. (a) True (b) False
18. 18.True or false: two equal parallel lines is the symbol for a resistor. (a) True (b) False
19. 19.Which drawing is the symbol for a capacitor? (a) triangle, bar and arrows (b) a circle with V inside (c) a plain rectangle (d) two equal parallel lines
20. 20.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) switch (b) motor (c) junction (d) cell
21. 21.True or false: a long and a short line is the symbol for an LED. (a) True (b) False
22. 22.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) cell (b) capacitor (c) diode (d) ammeter
23. 23.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) battery (b) resistor (c) junction (d) switch
24. 24.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) cell (b) resistor (c) capacitor (d) battery
25. 25.True or false: a circle with a cross is the symbol for a resistor. (a) True (b) False
26. 26.True or false: a circle with M inside is the symbol for a switch. (a) True (b) False
27. 27.True or false: one tall, one short bar is the symbol for a cell. (a) True (b) False
28. 28.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) switch (b) junction (c) cell (d) voltmeter
29. 29.Which drawing is the symbol for a battery? (a) triangle against a bar (b) a circle with M inside (c) many long-short pairs (d) a small empty box
30. 30.Which drawing is the symbol for an LED? (a) triangle, bar and arrows (b) a circle with a cross (c) a dot where wires meet (d) one tall, one short bar
31. 31.True or false: a small empty box is the symbol for a resistor. (a) True (b) False
32. 32.True or false: a circle with V inside is the symbol for a switch. (a) True (b) False
33. 33.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) bulb (b) motor (c) cell (d) LED
34. 34.✏️ In a circuit diagram, which part is drawn as a straight line? (a) motor (b) switch (c) wire (d) battery
35. 35.True or false: a dot where wires meet is the symbol for a wire. (a) False (b) True
36. 36.True or false: triangle, bar and arrows is the symbol for a wire. (a) False (b) True
37. 37.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) dotted circles (c) straight lines (d) little stars
38. 38.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) switch (b) LED (c) battery (d) bulb
39. 39.Which drawing is the symbol for a motor? (a) two or more cell symbols (b) many long-short pairs (c) a small empty box (d) a circle with M inside
40. 40.True or false: a circle with a cross is the symbol for a bulb. (a) True (b) False

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