Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 421 · 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.Which drawing is the symbol for a wire? (a) a circle with a cross (b) a long and a short line (c) a straight line (d) a dot where wires meet
2. 2.True or false: a line lifted at a gap is the symbol for a switch. (a) True (b) False
3. 3.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) to hide the circuit (c) symbols are heavier (d) quick and clear for all
4. 4.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) LED (b) bulb (c) switch (d) diode
5. 5.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) both lines (c) the shorter line (d) neither line
6. 6.True or false: a long and a short line is the symbol for a cell. (a) True (b) False
7. 7.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) capacitor (b) junction (c) diode (d) bulb
8. 8.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) battery (b) wire (c) resistor (d) voltmeter
9. 9.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) diode (b) LED (c) bulb (d) battery
10. 10.True or false: a circle with a cross is the symbol for a motor. (a) False (b) True
11. 11.True or false: triangle against a bar is the symbol for a wire. (a) False (b) True
12. 12.Which drawing is the symbol for a capacitor? (a) triangle against a bar (b) a circle with M inside (c) two or more cell symbols (d) two equal parallel lines
13. 13.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) bulb (b) switch (c) cell (d) LED
14. 14.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) wavy lines (c) dotted circles (d) straight lines
15. 15.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) cell (b) motor (c) bulb (d) LED
16. 16.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) resistor (b) wire (c) switch (d) battery
17. 17.Which drawing is the symbol for a bulb? (a) triangle against a bar (b) one tall, one short bar (c) two or more cell symbols (d) a circle with a cross
18. 18.Which drawing is the symbol for a switch? (a) a long and a short line (b) a line lifted at a gap (c) a small empty box (d) a dot where wires meet
19. 19.Which drawing is the symbol for a resistor? (a) a plain rectangle (b) a line lifted at a gap (c) a circle with A inside (d) two equal parallel lines
20. 20.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) diode (b) motor (c) cell (d) resistor
21. 21.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) LED (b) resistor (c) cell (d) motor
22. 22.Which drawing is the symbol for an LED? (a) a circle with a cross (b) a line lifted at a gap (c) triangle, bar and arrows (d) a long and a short line
23. 23.Which drawing is the symbol for an ammeter? (a) one tall, one short bar (b) a circle with V inside (c) a circle with A inside (d) a circle with an X in it
24. 24.Which drawing is the symbol for a motor? (a) two or more cell symbols (b) a small empty box (c) a circle with M inside (d) a long and a short line
25. 25.Which drawing is the symbol for a battery? (a) a small empty box (b) two or more cell symbols (c) a circle with A inside (d) a dot where wires meet
26. 26.Which drawing is the symbol for a cell? (a) two equal parallel lines (b) a dot where wires meet (c) a line lifted at a gap (d) a long and a short line
27. 27.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) ammeter (b) LED (c) junction (d) bulb
28. 28.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) diode (b) cell (c) battery (d) junction
29. 29.Which drawing is the symbol for a diode? (a) a circle with an X in it (b) a line lifted at a gap (c) a straight line (d) triangle against a bar
30. 30.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) resistor (b) capacitor (c) cell (d) voltmeter
31. 31.True or false: a circle with A inside is the symbol for a switch. (a) True (b) False
32. 32.Which drawing is the symbol for a cell? (a) many long-short pairs (b) a plain rectangle (c) one tall, one short bar (d) a circle with a cross
33. 33.True or false: triangle against a bar is the symbol for a diode. (a) False (b) True
34. 34.True or false: a circle with V inside is the symbol for a voltmeter. (a) False (b) True
35. 35.True or false: a small empty box is the symbol for a resistor. (a) True (b) False
36. 36.True or false: a circle with a cross is the symbol for a bulb. (a) False (b) True
37. 37.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) junction (b) motor (c) voltmeter (d) battery
38. 38.Which drawing is the symbol for a voltmeter? (a) a small empty box (b) many long-short pairs (c) one tall, one short bar (d) a circle with V inside
39. 39.True or false: a straight line is the symbol for a resistor. (a) True (b) False
40. 40.True or false: a circle with A inside is the symbol for an ammeter. (a) False (b) True

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