Electronics Worksheet: Electronic Components

Electronics lesson 17: Electronic components · Set 526 · 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.🧩 A capacitor in a circuit can … (a) measure heat (b) make light (c) store charge briefly (d) spin a wheel
2. 2.🧩 Which component senses how hot it is? (a) buzzer (b) LED (c) thermistor (d) transistor
3. 3.What does a motor do? (a) turns a fan or wheels (b) makes a beeping sound (c) is a resistance knob (d) smooths a wobbly supply
4. 4.What does a potentiometer do? (a) lets current go one way (b) glows using little power (c) is a resistance knob (d) senses how hot it is
5. 5.🧩 Which component makes things spin? (a) motor (b) capacitor (c) LED (d) transistor
6. 6.True or false: a potentiometer senses how hot it is. (a) True (b) False
7. 7.🧩 Which component glows using little power? (a) resistor (b) motor (c) LED (d) transistor
8. 8.🧩 Which component stores a little charge? (a) motor (b) resistor (c) capacitor (d) potentiometer
9. 9.🧩 Which component makes a beeping sound? (a) diode (b) potentiometer (c) fuse (d) buzzer
10. 10.🧩 Which component has coloured bands? (a) fuse (b) potentiometer (c) resistor (d) thermistor
11. 11.True or false: a capacitor makes a beeping sound. (a) False (b) True
12. 12.What does an LDR do? (a) lets current go one way (b) blows if current is high (c) senses how bright it is (d) has coloured bands
13. 13.What does a transistor do? (a) boosts a small signal (b) is a resistance knob (c) limits the current (d) senses how hot it is
14. 14.What does a capacitor do? (a) stores a little charge (b) makes a beeping sound (c) makes things spin (d) limits the current
15. 15.🧩 Which part changes electrical energy into sound? (a) a capacitor (b) a buzzer (c) a diode (d) a resistor
16. 16.🧩 Which part changes electrical energy into movement? (a) a resistor (b) a motor (c) a fuse (d) an LED
17. 17.What does a resistor do? (a) glows using little power (b) lets current go one way (c) makes a beeping sound (d) has coloured bands
18. 18.What does a thermistor do? (a) senses how hot it is (b) boosts a small signal (c) turns a fan or wheels (d) senses how bright it is
19. 19.🧩 Which component smooths a wobbly supply? (a) buzzer (b) motor (c) capacitor (d) thermistor
20. 20.True or false: an LED glows using little power. (a) False (b) True
21. 21.What does a buzzer do? (a) senses how hot it is (b) lets current go one way (c) makes a beeping sound (d) has coloured bands
22. 22.True or false: a motor makes a beeping sound. (a) False (b) True
23. 23.🧩 Which component is a resistance knob? (a) potentiometer (b) buzzer (c) diode (d) thermistor
24. 24.True or false: a motor turns a fan or wheels. (a) False (b) True
25. 25.What does a resistor do? (a) limits the current (b) makes a beeping sound (c) stores a little charge (d) blows if current is high
26. 26.True or false: a capacitor boosts a small signal. (a) False (b) True
27. 27.True or false: a thermistor senses how bright it is. (a) False (b) True
28. 28.🧩 Which component lets current go one way? (a) thermistor (b) diode (c) buzzer (d) LDR
29. 29.True or false: a diode lets current go one way. (a) False (b) True
30. 30.True or false: a fuse limits the current. (a) True (b) False
31. 31.What does a diode do? (a) makes things spin (b) lets current go one way (c) stores a little charge (d) beeps for an alarm
32. 32.True or false: a capacitor lets current go one way. (a) False (b) True
33. 33.True or false: a capacitor stores a little charge. (a) False (b) True
34. 34.What does a fuse do? (a) makes a beeping sound (b) blows if current is high (c) boosts a small signal (d) glows using little power
35. 35.True or false: a buzzer limits the current. (a) True (b) False
36. 36.True or false: a transistor boosts a small signal. (a) False (b) True
37. 37.True or false: a resistor limits the current. (a) False (b) True
38. 38.What does a motor do? (a) boosts a small signal (b) makes things spin (c) makes a beeping sound (d) limits the current
39. 39.True or false: a diode boosts a small signal. (a) False (b) True
40. 40.🧩 Which component turns a fan or wheels? (a) resistor (b) LDR (c) LED (d) motor

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