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Electronics Worksheet: Electronic Components

Electronics lesson 17: Electronic components · Set 609 · 40 questions
TalentJR

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.

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

Answer key

  1. False
  2. buzzer
  3. capacitor
  4. False
  5. a motor
  6. thermistor
  7. resistor
  8. a buzzer
  9. store charge briefly
  10. False
  11. capacitor
  12. diode
  13. True
  14. makes things spin
  15. senses how bright it is
  16. False
  17. False
  18. transistor
  19. True
  20. stores a little charge
  21. boosts a small signal
  22. buzzer
  23. False
  24. motor
  25. potentiometer
  26. False
  27. smooths a wobbly supply
  28. blows if current is high
  29. makes a beeping sound
  30. fuse
  31. glows using little power
  32. True
  33. LDR
  34. False
  35. False
  36. limits the current
  37. has coloured bands
  38. False
  39. True
  40. True

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