Electronics Worksheet: Electronic Components

Electronics lesson 17: Electronic components · Set 53 · 40 questions

Remember (One part, one job): Resistor: limits current. Capacitor: stores a little charge. Diode: one way only. LED: one way and glows. Buzzer: sound. Motor: spinning. Potentiometer: a knob that changes resistance. LDR: light sensor. Thermistor: heat sensor. Fuse: protects by blowing. Transistor: boosts or switches.

1. 1.True or false: an LED glows using little power. (a) True (b) False
2. 2.True or false: a capacitor smooths a wobbly supply. (a) False (b) True
3. 3.🧩 A capacitor in a circuit can … (a) spin a wheel (b) store charge briefly (c) measure heat (d) make light
4. 4.What does a fuse do? (a) stores a little charge (b) boosts a small signal (c) turns a fan or wheels (d) blows if current is high
5. 5.What does an LDR do? (a) makes a beeping sound (b) stores a little charge (c) turns a fan or wheels (d) senses how bright it is
6. 6.🧩 Which component lets current go one way? (a) LDR (b) buzzer (c) diode (d) thermistor
7. 7.🧩 Which part changes electrical energy into sound? (a) a diode (b) a buzzer (c) a resistor (d) a capacitor
8. 8.🧩 Which component senses how bright it is? (a) potentiometer (b) transistor (c) resistor (d) LDR
9. 9.What does a transistor do? (a) stores a little charge (b) makes a beeping sound (c) boosts a small signal (d) senses how bright it is
10. 10.What does a capacitor do? (a) beeps for an alarm (b) lets current go one way (c) stores a little charge (d) makes things spin
11. 11.🧩 Which part changes electrical energy into movement? (a) a fuse (b) a resistor (c) an LED (d) a motor
12. 12.What does a buzzer do? (a) limits the current (b) turns a fan or wheels (c) beeps for an alarm (d) has coloured bands
13. 13.🧩 Which component makes things spin? (a) thermistor (b) potentiometer (c) LED (d) motor
14. 14.🧩 Which component turns a fan or wheels? (a) fuse (b) motor (c) transistor (d) capacitor
15. 15.What does a motor do? (a) turns a fan or wheels (b) has coloured bands (c) boosts a small signal (d) is a resistance knob
16. 16.What does a buzzer do? (a) makes a beeping sound (b) blows if current is high (c) has coloured bands (d) lets current go one way
17. 17.True or false: a resistor beeps for an alarm. (a) True (b) False
18. 18.🧩 Which component glows using little power? (a) fuse (b) buzzer (c) thermistor (d) LED
19. 19.True or false: a resistor has coloured bands. (a) False (b) True
20. 20.What does a motor do? (a) boosts a small signal (b) makes a beeping sound (c) senses how hot it is (d) makes things spin
21. 21.True or false: a fuse smooths a wobbly supply. (a) True (b) False
22. 22.🧩 Which component boosts a small signal? (a) buzzer (b) transistor (c) fuse (d) capacitor
23. 23.True or false: an LDR senses how bright it is. (a) True (b) False
24. 24.True or false: a transistor is a resistance knob. (a) False (b) True
25. 25.🧩 Which component senses how hot it is? (a) motor (b) buzzer (c) thermistor (d) potentiometer
26. 26.What does a resistor do? (a) lets current go one way (b) senses how hot it is (c) makes things spin (d) has coloured bands
27. 27.True or false: a resistor senses how hot it is. (a) True (b) False
28. 28.True or false: a motor has coloured bands. (a) True (b) False
29. 29.True or false: a resistor limits the current. (a) False (b) True
30. 30.What does a thermistor do? (a) limits the current (b) senses how hot it is (c) stores a little charge (d) has coloured bands
31. 31.🧩 Which component has coloured bands? (a) capacitor (b) fuse (c) resistor (d) buzzer
32. 32.🧩 Which component smooths a wobbly supply? (a) motor (b) buzzer (c) fuse (d) capacitor
33. 33.What does a diode do? (a) lets current go one way (b) smooths a wobbly supply (c) limits the current (d) boosts a small signal
34. 34.True or false: a transistor boosts a small signal. (a) False (b) True
35. 35.True or false: a transistor makes a beeping sound. (a) False (b) True
36. 36.🧩 Which component makes a beeping sound? (a) motor (b) capacitor (c) buzzer (d) fuse
37. 37.True or false: a motor makes things spin. (a) False (b) True
38. 38.🧩 Which component beeps for an alarm? (a) diode (b) buzzer (c) resistor (d) capacitor
39. 39.What does an LED do? (a) glows using little power (b) senses how bright it is (c) beeps for an alarm (d) boosts a small signal
40. 40.What does a potentiometer do? (a) smooths a wobbly supply (b) beeps for an alarm (c) is a resistance knob (d) makes things spin

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