Electronics Worksheet: Circuit Symbols

Electronics lesson 7: Circuit symbols · Set 743 · 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 an ammeter? (a) a dot where wires meet (b) a circle with a cross (c) a small empty box (d) a circle with A inside
2. 2.Which drawing is the symbol for a bulb? (a) a circle with V inside (b) one tall, one short bar (c) two equal parallel lines (d) a circle with an X in it
3. 3.True or false: a dot where wires meet is the symbol for a motor. (a) False (b) True
4. 4.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) straight lines (c) little stars (d) wavy lines
5. 5.Which drawing is the symbol for a diode? (a) a plain rectangle (b) many long-short pairs (c) triangle against a bar (d) a circle with an X in it
6. 6.Which drawing is the symbol for a capacitor? (a) triangle against a bar (b) two equal parallel lines (c) one tall, one short bar (d) triangle, bar and arrows
7. 7.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) neither line (c) the longer line (d) the shorter line
8. 8.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) bulb (b) voltmeter (c) junction (d) ammeter
9. 9.True or false: a straight line is the symbol for a cell. (a) True (b) False
10. 10.Which drawing is the symbol for a junction? (a) a small empty box (b) a circle with V inside (c) a dot where wires meet (d) triangle, bar and arrows
11. 11.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) wire (b) resistor (c) diode (d) capacitor
12. 12.Which drawing is the symbol for a resistor? (a) a straight line (b) two equal parallel lines (c) triangle, bar and arrows (d) a plain rectangle
13. 13.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) motor (b) resistor (c) battery (d) switch
14. 14.True or false: a plain rectangle is the symbol for an LED. (a) True (b) False
15. 15.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) to hide the circuit (c) quick and clear for all (d) to make it colourful
16. 16.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) voltmeter (b) resistor (c) switch (d) bulb
17. 17.✏️ In a circuit diagram, which part is drawn as a straight line? (a) capacitor (b) wire (c) switch (d) motor
18. 18.True or false: a long and a short line is the symbol for a cell. (a) False (b) True
19. 19.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) bulb (b) battery (c) switch (d) cell
20. 20.True or false: one tall, one short bar is the symbol for a cell. (a) False (b) True
21. 21.True or false: two or more cell symbols is the symbol for a resistor. (a) True (b) False
22. 22.True or false: a line lifted at a gap is the symbol for a switch. (a) False (b) True
23. 23.Which drawing is the symbol for an LED? (a) a circle with an X in it (b) a circle with V inside (c) triangle, bar and arrows (d) a long and a short line
24. 24.True or false: two or more cell symbols is the symbol for a capacitor. (a) True (b) False
25. 25.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) LED (b) cell (c) junction (d) battery
26. 26.Which drawing is the symbol for a battery? (a) a plain rectangle (b) two or more cell symbols (c) one tall, one short bar (d) a circle with an X in it
27. 27.True or false: a circle with a cross is the symbol for a wire. (a) False (b) True
28. 28.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) capacitor (b) motor (c) bulb (d) switch
29. 29.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) switch (b) bulb (c) capacitor (d) battery
30. 30.True or false: a circle with a cross is the symbol for a junction. (a) False (b) True
31. 31.True or false: a dot where wires meet is the symbol for a voltmeter. (a) True (b) False
32. 32.True or false: a plain rectangle is the symbol for a diode. (a) False (b) True
33. 33.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) bulb (b) diode (c) switch (d) resistor
34. 34.Which drawing is the symbol for a switch? (a) a long and a short line (b) a dot where wires meet (c) many long-short pairs (d) a line lifted at a gap
35. 35.True or false: two equal parallel lines is the symbol for a capacitor. (a) True (b) False
36. 36.Which drawing is the symbol for a voltmeter? (a) two equal parallel lines (b) a plain rectangle (c) a line lifted at a gap (d) a circle with V inside
37. 37.Which drawing is the symbol for a cell? (a) triangle against a bar (b) a long and a short line (c) a circle with an X in it (d) a straight line
38. 38.Which drawing is the symbol for a cell? (a) a line lifted at a gap (b) many long-short pairs (c) one tall, one short bar (d) a plain rectangle
39. 39.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) diode (b) cell (c) junction (d) switch
40. 40.Which drawing is the symbol for a motor? (a) a long and a short line (b) two equal parallel lines (c) a circle with M inside (d) a circle with an X in it

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