Electronics Worksheet: Electronic Components

Electronics lesson 17: Electronic components · Set 82 · 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 fuse do? (a) blows if current is high (b) makes a beeping sound (c) limits the current (d) lets current go one way
2. 2.What does a capacitor do? (a) makes a beeping sound (b) makes things spin (c) blows if current is high (d) smooths a wobbly supply
3. 3.🧩 Which component blows if current is high? (a) capacitor (b) fuse (c) thermistor (d) motor
4. 4.What does a diode do? (a) lets current go one way (b) makes things spin (c) has coloured bands (d) blows if current is high
5. 5.🧩 Which component glows using little power? (a) LDR (b) resistor (c) thermistor (d) LED
6. 6.True or false: a transistor boosts a small signal. (a) True (b) False
7. 7.🧩 Which component is a resistance knob? (a) transistor (b) potentiometer (c) capacitor (d) resistor
8. 8.🧩 Which component makes a beeping sound? (a) LED (b) buzzer (c) LDR (d) fuse
9. 9.🧩 A capacitor in a circuit can … (a) store charge briefly (b) measure heat (c) spin a wheel (d) make light
10. 10.What does a resistor do? (a) makes a beeping sound (b) limits the current (c) glows using little power (d) beeps for an alarm
11. 11.🧩 Which part changes electrical energy into sound? (a) a capacitor (b) a buzzer (c) a diode (d) a resistor
12. 12.🧩 Which component smooths a wobbly supply? (a) potentiometer (b) LDR (c) diode (d) capacitor
13. 13.🧩 Which component boosts a small signal? (a) transistor (b) diode (c) resistor (d) capacitor
14. 14.What does a buzzer do? (a) beeps for an alarm (b) makes things spin (c) stores a little charge (d) has coloured bands
15. 15.True or false: a transistor smooths a wobbly supply. (a) False (b) True
16. 16.True or false: a transistor limits the current. (a) True (b) False
17. 17.True or false: a diode stores a little charge. (a) False (b) True
18. 18.What does a buzzer do? (a) glows using little power (b) makes a beeping sound (c) limits the current (d) stores a little charge
19. 19.🧩 Which component makes things spin? (a) LED (b) transistor (c) motor (d) capacitor
20. 20.What does an LED do? (a) beeps for an alarm (b) turns a fan or wheels (c) senses how hot it is (d) glows using little power
21. 21.What does a potentiometer do? (a) is a resistance knob (b) smooths a wobbly supply (c) lets current go one way (d) senses how hot it is
22. 22.True or false: a motor makes things spin. (a) True (b) False
23. 23.What does a transistor do? (a) makes a beeping sound (b) smooths a wobbly supply (c) turns a fan or wheels (d) boosts a small signal
24. 24.🧩 Which component lets current go one way? (a) transistor (b) thermistor (c) resistor (d) diode
25. 25.True or false: a diode lets current go one way. (a) True (b) False
26. 26.🧩 Which part changes electrical energy into movement? (a) an LED (b) a motor (c) a fuse (d) a resistor
27. 27.What does a motor do? (a) makes things spin (b) has coloured bands (c) stores a little charge (d) glows using little power
28. 28.True or false: a diode blows if current is high. (a) False (b) True
29. 29.What does an LDR do? (a) has coloured bands (b) smooths a wobbly supply (c) senses how bright it is (d) makes a beeping sound
30. 30.True or false: a fuse lets current go one way. (a) True (b) False
31. 31.True or false: a capacitor makes a beeping sound. (a) True (b) False
32. 32.True or false: a thermistor senses how hot it is. (a) True (b) False
33. 33.What does a motor do? (a) lets current go one way (b) senses how hot it is (c) turns a fan or wheels (d) has coloured bands
34. 34.🧩 Which component senses how hot it is? (a) capacitor (b) potentiometer (c) resistor (d) thermistor
35. 35.What does a thermistor do? (a) makes a beeping sound (b) senses how hot it is (c) makes things spin (d) turns a fan or wheels
36. 36.🧩 Which component turns a fan or wheels? (a) thermistor (b) fuse (c) motor (d) LDR
37. 37.🧩 Which component beeps for an alarm? (a) buzzer (b) capacitor (c) diode (d) fuse
38. 38.True or false: a thermistor turns a fan or wheels. (a) False (b) True
39. 39.True or false: an LDR is a resistance knob. (a) False (b) True
40. 40.🧩 Which component stores a little charge? (a) potentiometer (b) capacitor (c) diode (d) LED

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