Electronics Worksheet: Circuit Symbols

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

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