Electronics Worksheet: Electronic Components

Electronics lesson 17: Electronic components · Set 429 · 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.What does a buzzer do? (a) boosts a small signal (b) turns a fan or wheels (c) makes a beeping sound (d) makes things spin
2. 2.What does a resistor do? (a) senses how hot it is (b) limits the current (c) beeps for an alarm (d) makes things spin
3. 3.🧩 Which component has coloured bands? (a) buzzer (b) resistor (c) fuse (d) diode
4. 4.🧩 Which component limits the current? (a) LDR (b) resistor (c) potentiometer (d) fuse
5. 5.🧩 A capacitor in a circuit can … (a) make light (b) measure heat (c) spin a wheel (d) store charge briefly
6. 6.🧩 Which component boosts a small signal? (a) potentiometer (b) transistor (c) resistor (d) capacitor
7. 7.True or false: a diode boosts a small signal. (a) False (b) True
8. 8.🧩 Which component is a resistance knob? (a) motor (b) resistor (c) potentiometer (d) capacitor
9. 9.What does a fuse do? (a) makes a beeping sound (b) turns a fan or wheels (c) blows if current is high (d) boosts a small signal
10. 10.🧩 Which component smooths a wobbly supply? (a) buzzer (b) LED (c) capacitor (d) fuse
11. 11.What does a thermistor do? (a) senses how hot it is (b) blows if current is high (c) limits the current (d) senses how bright it is
12. 12.🧩 Which part changes electrical energy into sound? (a) a diode (b) a buzzer (c) a resistor (d) a capacitor
13. 13.What does an LED do? (a) blows if current is high (b) turns a fan or wheels (c) smooths a wobbly supply (d) glows using little power
14. 14.True or false: a capacitor boosts a small signal. (a) True (b) False
15. 15.True or false: an LED boosts a small signal. (a) True (b) False
16. 16.True or false: a motor makes things spin. (a) False (b) True
17. 17.True or false: a buzzer makes a beeping sound. (a) True (b) False
18. 18.True or false: a buzzer stores a little charge. (a) False (b) True
19. 19.🧩 Which part changes electrical energy into movement? (a) a motor (b) an LED (c) a resistor (d) a fuse
20. 20.🧩 Which component makes a beeping sound? (a) resistor (b) motor (c) capacitor (d) buzzer
21. 21.What does a transistor do? (a) boosts a small signal (b) senses how bright it is (c) beeps for an alarm (d) glows using little power
22. 22.🧩 Which component senses how bright it is? (a) LDR (b) resistor (c) potentiometer (d) motor
23. 23.True or false: a thermistor blows if current is high. (a) True (b) False
24. 24.🧩 Which component makes things spin? (a) resistor (b) capacitor (c) motor (d) LED
25. 25.True or false: a resistor has coloured bands. (a) False (b) True
26. 26.🧩 Which component senses how hot it is? (a) potentiometer (b) thermistor (c) capacitor (d) diode
27. 27.🧩 Which component lets current go one way? (a) resistor (b) buzzer (c) fuse (d) diode
28. 28.True or false: a resistor senses how hot it is. (a) True (b) False
29. 29.What does a capacitor do? (a) limits the current (b) makes a beeping sound (c) makes things spin (d) smooths a wobbly supply
30. 30.True or false: a motor beeps for an alarm. (a) True (b) False
31. 31.True or false: a transistor lets current go one way. (a) True (b) False
32. 32.🧩 Which component beeps for an alarm? (a) diode (b) thermistor (c) buzzer (d) fuse
33. 33.What does a motor do? (a) makes things spin (b) has coloured bands (c) boosts a small signal (d) senses how hot it is
34. 34.True or false: a transistor turns a fan or wheels. (a) True (b) False
35. 35.What does a potentiometer do? (a) senses how hot it is (b) is a resistance knob (c) limits the current (d) has coloured bands
36. 36.🧩 Which component turns a fan or wheels? (a) motor (b) diode (c) fuse (d) thermistor
37. 37.🧩 Which component glows using little power? (a) fuse (b) transistor (c) LED (d) thermistor
38. 38.True or false: a thermistor senses how hot it is. (a) False (b) True
39. 39.True or false: a transistor glows using little power. (a) False (b) True
40. 40.What does a diode do? (a) is a resistance knob (b) glows using little power (c) blows if current is high (d) lets current go one way

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