Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 151 · 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 make it colourful (b) quick and clear for all (c) symbols are heavier (d) to hide the circuit
2. 2.True or false: a line lifted at a gap is the symbol for a switch. (a) False (b) True
3. 3.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) both lines (c) neither line (d) the shorter line
4. 4.✏️ In a circuit diagram, which part is drawn as a straight line? (a) bulb (b) battery (c) switch (d) wire
5. 5.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) little stars (c) dotted circles (d) wavy lines
6. 6.Which drawing is the symbol for a cell? (a) a small empty box (b) a straight line (c) two or more cell symbols (d) a long and a short line
7. 7.True or false: a circle with a cross is the symbol for a diode. (a) False (b) True
8. 8.Which drawing is the symbol for a battery? (a) a long and a short line (b) a circle with M inside (c) a circle with V inside (d) two or more cell symbols
9. 9.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) resistor (b) motor (c) diode (d) voltmeter
10. 10.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) diode (b) LED (c) battery (d) bulb
11. 11.Which drawing is the symbol for a voltmeter? (a) a plain rectangle (b) triangle, bar and arrows (c) a circle with V inside (d) one tall, one short bar
12. 12.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) cell (b) battery (c) capacitor (d) resistor
13. 13.True or false: a long and a short line is the symbol for a junction. (a) True (b) False
14. 14.True or false: triangle against a bar is the symbol for a diode. (a) False (b) True
15. 15.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) resistor (b) capacitor (c) cell (d) voltmeter
16. 16.Which drawing is the symbol for a bulb? (a) a circle with an X in it (b) a circle with A inside (c) a plain rectangle (d) two equal parallel lines
17. 17.True or false: a plain rectangle is the symbol for a bulb. (a) False (b) True
18. 18.Which drawing is the symbol for a wire? (a) a long and a short line (b) a dot where wires meet (c) triangle against a bar (d) a straight line
19. 19.True or false: triangle, bar and arrows is the symbol for an LED. (a) False (b) True
20. 20.True or false: a plain rectangle is the symbol for a resistor. (a) False (b) True
21. 21.Which drawing is the symbol for a resistor? (a) a circle with M inside (b) a plain rectangle (c) two equal parallel lines (d) a dot where wires meet
22. 22.True or false: a circle with M inside is the symbol for a motor. (a) True (b) False
23. 23.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) motor (b) wire (c) resistor (d) switch
24. 24.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) cell (b) capacitor (c) battery (d) bulb
25. 25.True or false: a circle with A inside is the symbol for a capacitor. (a) True (b) False
26. 26.Which drawing is the symbol for a bulb? (a) two or more cell symbols (b) a circle with A inside (c) a circle with a cross (d) a long and a short line
27. 27.True or false: two equal parallel lines is the symbol for a capacitor. (a) True (b) False
28. 28.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) battery (b) bulb (c) voltmeter (d) ammeter
29. 29.True or false: a circle with M inside is the symbol for an LED. (a) True (b) False
30. 30.True or false: a long and a short line is the symbol for a motor. (a) True (b) False
31. 31.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) diode (b) switch (c) bulb (d) voltmeter
32. 32.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) battery (b) resistor (c) capacitor (d) ammeter
33. 33.Which drawing is the symbol for a diode? (a) triangle against a bar (b) a circle with A inside (c) a circle with a cross (d) a circle with V inside
34. 34.True or false: a circle with A inside is the symbol for an ammeter. (a) False (b) True
35. 35.Which drawing is the symbol for a switch? (a) a circle with V inside (b) one tall, one short bar (c) a line lifted at a gap (d) a plain rectangle
36. 36.True or false: a circle with a cross is the symbol for a bulb. (a) True (b) False
37. 37.True or false: a straight line is the symbol for a switch. (a) False (b) True
38. 38.Which drawing is the symbol for a capacitor? (a) two equal parallel lines (b) a plain rectangle (c) a circle with a cross (d) a circle with V inside
39. 39.True or false: one tall, one short bar is the symbol for an LED. (a) True (b) False
40. 40.Which drawing is the symbol for a motor? (a) two equal parallel lines (b) a circle with M inside (c) a dot where wires meet (d) triangle, bar and arrows

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