Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 946 · 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) symbols are heavier (b) to make it colourful (c) to hide the circuit (d) quick and clear for all
2. 2.Which drawing is the symbol for a battery? (a) a circle with an X in it (b) triangle, bar and arrows (c) a circle with M inside (d) many long-short pairs
3. 3.True or false: a straight line is the symbol for a diode. (a) True (b) False
4. 4.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) cell (b) switch (c) battery (d) resistor
5. 5.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) neither line (c) both lines (d) the shorter line
6. 6.True or false: a small empty box is the symbol for a resistor. (a) False (b) True
7. 7.Which drawing is the symbol for a capacitor? (a) a line lifted at a gap (b) a small empty box (c) a straight line (d) two equal parallel lines
8. 8.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) motor (b) cell (c) bulb (d) wire
9. 9.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) capacitor (b) motor (c) battery (d) cell
10. 10.Which drawing is the symbol for a junction? (a) two or more cell symbols (b) a long and a short line (c) a circle with an X in it (d) a dot where wires meet
11. 11.Which drawing is the symbol for a cell? (a) a small empty box (b) a long and a short line (c) many long-short pairs (d) triangle, bar and arrows
12. 12.True or false: a dot where wires meet is the symbol for a junction. (a) False (b) True
13. 13.True or false: a long and a short line is the symbol for a cell. (a) True (b) False
14. 14.Which drawing is the symbol for an LED? (a) a straight line (b) a line lifted at a gap (c) triangle, bar and arrows (d) a circle with V inside
15. 15.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) dotted circles (c) little stars (d) straight lines
16. 16.True or false: a line lifted at a gap is the symbol for a switch. (a) False (b) True
17. 17.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) capacitor (b) resistor (c) diode (d) cell
18. 18.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) resistor (b) motor (c) ammeter (d) junction
19. 19.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) cell (b) switch (c) diode (d) wire
20. 20.Which drawing is the symbol for a resistor? (a) a circle with a cross (b) a small empty box (c) a circle with an X in it (d) one tall, one short bar
21. 21.Which drawing is the symbol for a switch? (a) a small empty box (b) one tall, one short bar (c) a line lifted at a gap (d) a circle with V inside
22. 22.Which drawing is the symbol for a resistor? (a) triangle against a bar (b) a plain rectangle (c) one tall, one short bar (d) a line lifted at a gap
23. 23.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) LED (b) junction (c) switch (d) battery
24. 24.Which drawing is the symbol for a motor? (a) a circle with a cross (b) a circle with M inside (c) a small empty box (d) one tall, one short bar
25. 25.True or false: one tall, one short bar is the symbol for a motor. (a) True (b) False
26. 26.Which drawing is the symbol for an ammeter? (a) a line lifted at a gap (b) a circle with A inside (c) a circle with M inside (d) a long and a short line
27. 27.True or false: two equal parallel lines is the symbol for a capacitor. (a) False (b) True
28. 28.Which drawing is the symbol for a battery? (a) a long and a short line (b) two or more cell symbols (c) a circle with M inside (d) one tall, one short bar
29. 29.Which drawing is the symbol for a bulb? (a) a long and a short line (b) a circle with a cross (c) a dot where wires meet (d) a circle with M inside
30. 30.Which drawing is the symbol for a voltmeter? (a) a circle with a cross (b) one tall, one short bar (c) a circle with V inside (d) a plain rectangle
31. 31.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) capacitor (b) wire (c) battery (d) voltmeter
32. 32.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) voltmeter (b) battery (c) bulb (d) switch
33. 33.Which drawing is the symbol for a diode? (a) a dot where wires meet (b) a circle with V inside (c) a circle with M inside (d) triangle against a bar
34. 34.True or false: a circle with an X in it is the symbol for a motor. (a) True (b) False
35. 35.True or false: a long and a short line is the symbol for a diode. (a) True (b) False
36. 36.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) switch (b) ammeter (c) cell (d) LED
37. 37.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) bulb (b) resistor (c) ammeter (d) wire
38. 38.True or false: triangle, bar and arrows is the symbol for an LED. (a) True (b) False
39. 39.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) capacitor (b) wire (c) resistor (d) bulb
40. 40.True or false: a straight line is the symbol for an LED. (a) False (b) True

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