Electronics Worksheet: Electronic Components

Electronics lesson 17: Electronic components · Set 63 · 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.🧩 Which part changes electrical energy into movement? (a) an LED (b) a fuse (c) a resistor (d) a motor
2. 2.🧩 Which component makes things spin? (a) resistor (b) potentiometer (c) motor (d) transistor
3. 3.What does a resistor do? (a) senses how bright it is (b) limits the current (c) makes a beeping sound (d) makes things spin
4. 4.What does a buzzer do? (a) is a resistance knob (b) turns a fan or wheels (c) makes a beeping sound (d) has coloured bands
5. 5.True or false: a resistor has coloured bands. (a) True (b) False
6. 6.What does a thermistor do? (a) senses how hot it is (b) is a resistance knob (c) makes a beeping sound (d) lets current go one way
7. 7.True or false: a capacitor boosts a small signal. (a) False (b) True
8. 8.🧩 A capacitor in a circuit can … (a) spin a wheel (b) store charge briefly (c) make light (d) measure heat
9. 9.🧩 Which part changes electrical energy into sound? (a) a diode (b) a resistor (c) a buzzer (d) a capacitor
10. 10.🧩 Which component lets current go one way? (a) thermistor (b) diode (c) motor (d) LDR
11. 11.True or false: a potentiometer is a resistance knob. (a) True (b) False
12. 12.True or false: a resistor limits the current. (a) False (b) True
13. 13.What does an LDR do? (a) senses how bright it is (b) glows using little power (c) blows if current is high (d) senses how hot it is
14. 14.What does a buzzer do? (a) senses how hot it is (b) glows using little power (c) limits the current (d) beeps for an alarm
15. 15.What does a potentiometer do? (a) is a resistance knob (b) blows if current is high (c) makes things spin (d) makes a beeping sound
16. 16.What does a motor do? (a) is a resistance knob (b) glows using little power (c) makes things spin (d) senses how hot it is
17. 17.What does a resistor do? (a) boosts a small signal (b) has coloured bands (c) makes things spin (d) senses how bright it is
18. 18.True or false: a capacitor lets current go one way. (a) False (b) True
19. 19.🧩 Which component glows using little power? (a) buzzer (b) motor (c) fuse (d) LED
20. 20.🧩 Which component smooths a wobbly supply? (a) capacitor (b) resistor (c) potentiometer (d) buzzer
21. 21.True or false: a transistor makes a beeping sound. (a) True (b) False
22. 22.What does an LED do? (a) senses how bright it is (b) smooths a wobbly supply (c) stores a little charge (d) glows using little power
23. 23.🧩 Which component blows if current is high? (a) fuse (b) resistor (c) LED (d) diode
24. 24.What does a capacitor do? (a) blows if current is high (b) beeps for an alarm (c) makes a beeping sound (d) smooths a wobbly supply
25. 25.🧩 Which component stores a little charge? (a) diode (b) capacitor (c) motor (d) resistor
26. 26.True or false: a capacitor blows if current is high. (a) False (b) True
27. 27.🧩 Which component turns a fan or wheels? (a) LDR (b) motor (c) buzzer (d) resistor
28. 28.True or false: a buzzer beeps for an alarm. (a) True (b) False
29. 29.True or false: a thermistor senses how hot it is. (a) True (b) False
30. 30.True or false: a capacitor smooths a wobbly supply. (a) False (b) True
31. 31.True or false: a motor turns a fan or wheels. (a) False (b) True
32. 32.What does a motor do? (a) limits the current (b) smooths a wobbly supply (c) stores a little charge (d) turns a fan or wheels
33. 33.🧩 Which component senses how hot it is? (a) motor (b) thermistor (c) capacitor (d) LED
34. 34.True or false: a diode makes things spin. (a) False (b) True
35. 35.True or false: a buzzer senses how bright it is. (a) False (b) True
36. 36.🧩 Which component is a resistance knob? (a) transistor (b) diode (c) potentiometer (d) LDR
37. 37.🧩 Which component senses how bright it is? (a) resistor (b) motor (c) LDR (d) fuse
38. 38.True or false: a resistor is a resistance knob. (a) True (b) False
39. 39.🧩 Which component limits the current? (a) resistor (b) LED (c) capacitor (d) transistor
40. 40.What does a capacitor do? (a) lets current go one way (b) senses how hot it is (c) makes things spin (d) stores a little charge

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