Electronics Worksheet: Electronic Components

Electronics lesson 17: Electronic components · Set 317 · 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 motor do? (a) boosts a small signal (b) senses how hot it is (c) makes things spin (d) makes a beeping sound
2. 2.What does a thermistor do? (a) boosts a small signal (b) smooths a wobbly supply (c) senses how hot it is (d) stores a little charge
3. 3.What does a potentiometer do? (a) is a resistance knob (b) lets current go one way (c) senses how bright it is (d) glows using little power
4. 4.🧩 Which part changes electrical energy into movement? (a) a fuse (b) a resistor (c) an LED (d) a motor
5. 5.True or false: a capacitor turns a fan or wheels. (a) False (b) True
6. 6.🧩 Which part changes electrical energy into sound? (a) a resistor (b) a buzzer (c) a diode (d) a capacitor
7. 7.True or false: a fuse has coloured bands. (a) True (b) False
8. 8.🧩 Which component makes things spin? (a) motor (b) resistor (c) potentiometer (d) LED
9. 9.True or false: a capacitor smooths a wobbly supply. (a) True (b) False
10. 10.🧩 Which component senses how bright it is? (a) LDR (b) buzzer (c) fuse (d) potentiometer
11. 11.🧩 A capacitor in a circuit can … (a) measure heat (b) spin a wheel (c) make light (d) store charge briefly
12. 12.🧩 Which component turns a fan or wheels? (a) diode (b) motor (c) fuse (d) LDR
13. 13.🧩 Which component lets current go one way? (a) transistor (b) diode (c) capacitor (d) LED
14. 14.True or false: an LDR senses how hot it is. (a) True (b) False
15. 15.What does a motor do? (a) turns a fan or wheels (b) stores a little charge (c) limits the current (d) beeps for an alarm
16. 16.True or false: a motor glows using little power. (a) True (b) False
17. 17.What does an LED do? (a) blows if current is high (b) limits the current (c) is a resistance knob (d) glows using little power
18. 18.🧩 Which component makes a beeping sound? (a) capacitor (b) buzzer (c) LDR (d) transistor
19. 19.🧩 Which component is a resistance knob? (a) potentiometer (b) transistor (c) buzzer (d) LDR
20. 20.What does a capacitor do? (a) stores a little charge (b) boosts a small signal (c) makes a beeping sound (d) glows using little power
21. 21.🧩 Which component senses how hot it is? (a) capacitor (b) thermistor (c) fuse (d) motor
22. 22.True or false: a buzzer beeps for an alarm. (a) False (b) True
23. 23.🧩 Which component stores a little charge? (a) potentiometer (b) diode (c) capacitor (d) motor
24. 24.🧩 Which component smooths a wobbly supply? (a) potentiometer (b) thermistor (c) LDR (d) capacitor
25. 25.🧩 Which component has coloured bands? (a) thermistor (b) resistor (c) fuse (d) diode
26. 26.🧩 Which component limits the current? (a) capacitor (b) buzzer (c) potentiometer (d) resistor
27. 27.True or false: a buzzer makes a beeping sound. (a) True (b) False
28. 28.What does a resistor do? (a) turns a fan or wheels (b) limits the current (c) senses how bright it is (d) is a resistance knob
29. 29.🧩 Which component boosts a small signal? (a) potentiometer (b) motor (c) resistor (d) transistor
30. 30.What does an LDR do? (a) senses how bright it is (b) stores a little charge (c) beeps for an alarm (d) turns a fan or wheels
31. 31.What does a diode do? (a) lets current go one way (b) glows using little power (c) limits the current (d) senses how hot it is
32. 32.What does a capacitor do? (a) smooths a wobbly supply (b) has coloured bands (c) limits the current (d) beeps for an alarm
33. 33.🧩 Which component blows if current is high? (a) potentiometer (b) capacitor (c) fuse (d) transistor
34. 34.True or false: a resistor limits the current. (a) True (b) False
35. 35.What does a transistor do? (a) makes a beeping sound (b) boosts a small signal (c) stores a little charge (d) makes things spin
36. 36.True or false: a thermistor turns a fan or wheels. (a) False (b) True
37. 37.True or false: a capacitor lets current go one way. (a) False (b) True
38. 38.True or false: an LDR lets current go one way. (a) True (b) False
39. 39.True or false: a potentiometer glows using little power. (a) False (b) True
40. 40.True or false: a buzzer lets current go one way. (a) False (b) True

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