Electronics Worksheet: Electronic Components

Electronics lesson 17: Electronic components · Set 645 · 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: a potentiometer blows if current is high. (a) False (b) True
2. 2.What does a buzzer do? (a) is a resistance knob (b) beeps for an alarm (c) glows using little power (d) makes things spin
3. 3.🧩 Which part changes electrical energy into movement? (a) a motor (b) an LED (c) a fuse (d) a resistor
4. 4.True or false: a capacitor stores a little charge. (a) False (b) True
5. 5.True or false: a resistor has coloured bands. (a) False (b) True
6. 6.🧩 Which component makes a beeping sound? (a) thermistor (b) diode (c) LDR (d) buzzer
7. 7.What does a fuse do? (a) boosts a small signal (b) lets current go one way (c) blows if current is high (d) is a resistance knob
8. 8.What does a capacitor do? (a) beeps for an alarm (b) lets current go one way (c) stores a little charge (d) senses how bright it is
9. 9.What does an LDR do? (a) blows if current is high (b) makes a beeping sound (c) stores a little charge (d) senses how bright it is
10. 10.What does a potentiometer do? (a) stores a little charge (b) glows using little power (c) beeps for an alarm (d) is a resistance knob
11. 11.🧩 Which component glows using little power? (a) LED (b) capacitor (c) motor (d) buzzer
12. 12.🧩 Which component stores a little charge? (a) transistor (b) LDR (c) capacitor (d) fuse
13. 13.🧩 A capacitor in a circuit can … (a) store charge briefly (b) spin a wheel (c) measure heat (d) make light
14. 14.True or false: a buzzer makes a beeping sound. (a) True (b) False
15. 15.🧩 Which component senses how hot it is? (a) LED (b) resistor (c) thermistor (d) LDR
16. 16.🧩 Which component senses how bright it is? (a) diode (b) buzzer (c) LDR (d) resistor
17. 17.What does a resistor do? (a) makes a beeping sound (b) limits the current (c) turns a fan or wheels (d) smooths a wobbly supply
18. 18.True or false: a fuse stores a little charge. (a) False (b) True
19. 19.🧩 Which component boosts a small signal? (a) transistor (b) buzzer (c) capacitor (d) motor
20. 20.True or false: a resistor limits the current. (a) False (b) True
21. 21.What does a thermistor do? (a) senses how hot it is (b) beeps for an alarm (c) smooths a wobbly supply (d) limits the current
22. 22.🧩 Which component limits the current? (a) capacitor (b) resistor (c) motor (d) fuse
23. 23.🧩 Which component lets current go one way? (a) capacitor (b) diode (c) LED (d) buzzer
24. 24.What does a buzzer do? (a) boosts a small signal (b) is a resistance knob (c) makes a beeping sound (d) lets current go one way
25. 25.True or false: an LED glows using little power. (a) True (b) False
26. 26.🧩 Which component makes things spin? (a) LDR (b) fuse (c) motor (d) transistor
27. 27.What does an LED do? (a) limits the current (b) makes a beeping sound (c) has coloured bands (d) glows using little power
28. 28.🧩 Which part changes electrical energy into sound? (a) a resistor (b) a capacitor (c) a diode (d) a buzzer
29. 29.True or false: a motor makes things spin. (a) True (b) False
30. 30.True or false: a motor blows if current is high. (a) False (b) True
31. 31.True or false: a resistor is a resistance knob. (a) True (b) False
32. 32.True or false: a diode has coloured bands. (a) False (b) True
33. 33.What does a capacitor do? (a) senses how bright it is (b) boosts a small signal (c) smooths a wobbly supply (d) is a resistance knob
34. 34.True or false: a thermistor stores a little charge. (a) True (b) False
35. 35.True or false: a fuse blows if current is high. (a) False (b) True
36. 36.True or false: a resistor beeps for an alarm. (a) True (b) False
37. 37.🧩 Which component has coloured bands? (a) resistor (b) diode (c) fuse (d) buzzer
38. 38.True or false: a transistor glows using little power. (a) True (b) False
39. 39.True or false: an LDR stores a little charge. (a) True (b) False
40. 40.What does a diode do? (a) has coloured bands (b) stores a little charge (c) glows using little power (d) lets current go one way

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