Electronics Worksheet: Electronic Components

Electronics lesson 17: Electronic components · Set 62 · 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.🧩 Which part changes electrical energy into movement? (a) a resistor (b) a motor (c) a fuse (d) an LED
2. 2.True or false: a diode lets current go one way. (a) True (b) False
3. 3.🧩 Which component glows using little power? (a) potentiometer (b) LED (c) diode (d) capacitor
4. 4.What does a fuse do? (a) blows if current is high (b) has coloured bands (c) senses how bright it is (d) stores a little charge
5. 5.True or false: a fuse boosts a small signal. (a) True (b) False
6. 6.What does a thermistor do? (a) makes things spin (b) blows if current is high (c) senses how hot it is (d) glows using little power
7. 7.🧩 A capacitor in a circuit can … (a) spin a wheel (b) measure heat (c) store charge briefly (d) make light
8. 8.True or false: a transistor boosts a small signal. (a) False (b) True
9. 9.True or false: a motor turns a fan or wheels. (a) True (b) False
10. 10.🧩 Which component boosts a small signal? (a) potentiometer (b) transistor (c) fuse (d) LED
11. 11.What does a transistor do? (a) glows using little power (b) boosts a small signal (c) makes a beeping sound (d) smooths a wobbly supply
12. 12.🧩 Which part changes electrical energy into sound? (a) a resistor (b) a capacitor (c) a buzzer (d) a diode
13. 13.🧩 Which component smooths a wobbly supply? (a) LED (b) capacitor (c) resistor (d) LDR
14. 14.🧩 Which component makes things spin? (a) capacitor (b) transistor (c) diode (d) motor
15. 15.🧩 Which component senses how bright it is? (a) motor (b) LED (c) LDR (d) buzzer
16. 16.True or false: a capacitor stores a little charge. (a) False (b) True
17. 17.What does a buzzer do? (a) blows if current is high (b) lets current go one way (c) smooths a wobbly supply (d) beeps for an alarm
18. 18.What does a resistor do? (a) senses how hot it is (b) glows using little power (c) limits the current (d) lets current go one way
19. 19.True or false: a buzzer boosts a small signal. (a) False (b) True
20. 20.True or false: an LDR stores a little charge. (a) False (b) True
21. 21.True or false: a diode glows using little power. (a) False (b) True
22. 22.True or false: a motor makes things spin. (a) True (b) False
23. 23.What does an LED do? (a) makes things spin (b) lets current go one way (c) beeps for an alarm (d) glows using little power
24. 24.What does a buzzer do? (a) turns a fan or wheels (b) limits the current (c) boosts a small signal (d) makes a beeping sound
25. 25.True or false: a capacitor makes things spin. (a) True (b) False
26. 26.🧩 Which component turns a fan or wheels? (a) buzzer (b) diode (c) potentiometer (d) motor
27. 27.True or false: a buzzer beeps for an alarm. (a) True (b) False
28. 28.🧩 Which component stores a little charge? (a) resistor (b) fuse (c) potentiometer (d) capacitor
29. 29.What does a capacitor do? (a) beeps for an alarm (b) limits the current (c) has coloured bands (d) smooths a wobbly supply
30. 30.🧩 Which component blows if current is high? (a) buzzer (b) potentiometer (c) fuse (d) motor
31. 31.True or false: a motor senses how bright it is. (a) False (b) True
32. 32.🧩 Which component beeps for an alarm? (a) buzzer (b) fuse (c) diode (d) LDR
33. 33.What does an LDR do? (a) glows using little power (b) senses how bright it is (c) lets current go one way (d) blows if current is high
34. 34.True or false: a capacitor smooths a wobbly supply. (a) True (b) False
35. 35.🧩 Which component makes a beeping sound? (a) potentiometer (b) motor (c) buzzer (d) resistor
36. 36.What does a capacitor do? (a) beeps for an alarm (b) glows using little power (c) has coloured bands (d) stores a little charge
37. 37.What does a motor do? (a) is a resistance knob (b) stores a little charge (c) glows using little power (d) makes things spin
38. 38.🧩 Which component limits the current? (a) LDR (b) resistor (c) capacitor (d) thermistor
39. 39.🧩 Which component is a resistance knob? (a) diode (b) potentiometer (c) thermistor (d) buzzer
40. 40.What does a motor do? (a) turns a fan or wheels (b) boosts a small signal (c) limits the current (d) lets current go one way

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