Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 475 · 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: triangle, bar and arrows is the symbol for an LED. (a) True (b) False
2. 2.Which drawing is the symbol for a motor? (a) many long-short pairs (b) a straight line (c) a circle with A inside (d) a circle with M inside
3. 3.✏️ 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
4. 4.Which drawing is the symbol for a resistor? (a) a small empty box (b) a line lifted at a gap (c) a dot where wires meet (d) triangle against a bar
5. 5.True or false: a long and a short line is the symbol for a cell. (a) True (b) False
6. 6.True or false: a circle with V inside is the symbol for an LED. (a) False (b) True
7. 7.Which drawing is the symbol for a bulb? (a) triangle, bar and arrows (b) triangle against a bar (c) a circle with a cross (d) many long-short pairs
8. 8.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) LED (b) motor (c) cell (d) switch
9. 9.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) cell (b) ammeter (c) bulb (d) voltmeter
10. 10.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) resistor (b) switch (c) bulb (d) cell
11. 11.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) the shorter line (c) both lines (d) the longer line
12. 12.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) capacitor (b) resistor (c) ammeter (d) motor
13. 13.✏️ In a circuit diagram, which part is drawn as a straight line? (a) wire (b) bulb (c) battery (d) voltmeter
14. 14.Which drawing is the symbol for a capacitor? (a) triangle, bar and arrows (b) a circle with V inside (c) a circle with a cross (d) two equal parallel lines
15. 15.True or false: a dot where wires meet is the symbol for an LED. (a) False (b) True
16. 16.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) little stars (c) dotted circles (d) wavy lines
17. 17.Which drawing is the symbol for an ammeter? (a) two equal parallel lines (b) a circle with A inside (c) a straight line (d) a long and a short line
18. 18.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) LED (b) switch (c) cell (d) battery
19. 19.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) bulb (b) switch (c) LED (d) cell
20. 20.True or false: a plain rectangle is the symbol for a diode. (a) True (b) False
21. 21.Which drawing is the symbol for a battery? (a) two or more cell symbols (b) triangle, bar and arrows (c) a circle with A inside (d) a dot where wires meet
22. 22.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) battery (b) motor (c) cell (d) ammeter
23. 23.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) junction (b) voltmeter (c) battery (d) bulb
24. 24.Which drawing is the symbol for a junction? (a) a small empty box (b) a dot where wires meet (c) a line lifted at a gap (d) one tall, one short bar
25. 25.Which drawing is the symbol for a cell? (a) one tall, one short bar (b) triangle, bar and arrows (c) a straight line (d) a small empty box
26. 26.True or false: a straight line is the symbol for a wire. (a) False (b) True
27. 27.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) diode (b) LED (c) cell (d) bulb
28. 28.True or false: a dot where wires meet is the symbol for a battery. (a) True (b) False
29. 29.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) diode (b) wire (c) capacitor (d) ammeter
30. 30.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) bulb (b) diode (c) resistor (d) capacitor
31. 31.True or false: a circle with V inside is the symbol for a voltmeter. (a) True (b) False
32. 32.Which drawing is the symbol for an LED? (a) a small empty box (b) triangle, bar and arrows (c) one tall, one short bar (d) two equal parallel lines
33. 33.True or false: triangle against a bar is the symbol for a diode. (a) True (b) False
34. 34.Which drawing is the symbol for a switch? (a) a line lifted at a gap (b) a circle with M inside (c) a plain rectangle (d) one tall, one short bar
35. 35.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) wire (b) bulb (c) switch (d) battery
36. 36.Which drawing is the symbol for a resistor? (a) a circle with a cross (b) a dot where wires meet (c) a circle with A inside (d) a plain rectangle
37. 37.True or false: a plain rectangle is the symbol for a resistor. (a) True (b) False
38. 38.True or false: triangle, bar and arrows is the symbol for a switch. (a) True (b) False
39. 39.True or false: a straight line is the symbol for a switch. (a) False (b) True
40. 40.True or false: a circle with A inside is the symbol for an ammeter. (a) False (b) True

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