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Electronics Worksheet: Electronic Components

Electronics lesson 17: Electronic components · Set 586 · 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: an LED makes a beeping sound. (a) True (b) False
  2. 2.What does a potentiometer do? (a) stores a little charge (b) glows using little power (c) makes things spin (d) is a resistance knob
  3. 3.What does an LDR do? (a) makes a beeping sound (b) senses how bright it is (c) has coloured bands (d) is a resistance knob
  4. 4.🧩 A capacitor in a circuit can … (a) spin a wheel (b) measure heat (c) make light (d) store charge briefly
  5. 5.What does an LED do? (a) senses how hot it is (b) makes a beeping sound (c) has coloured bands (d) glows using little power
  6. 6.🧩 Which component makes things spin? (a) motor (b) transistor (c) thermistor (d) resistor
  7. 7.🧩 Which component boosts a small signal? (a) transistor (b) capacitor (c) buzzer (d) resistor
  8. 8.What does a buzzer do? (a) beeps for an alarm (b) turns a fan or wheels (c) is a resistance knob (d) has coloured bands
  9. 9.True or false: a resistor glows using little power. (a) True (b) False
  10. 10.🧩 Which component stores a little charge? (a) capacitor (b) resistor (c) motor (d) LED
  11. 11.True or false: a diode lets current go one way. (a) True (b) False
  12. 12.🧩 Which part changes electrical energy into sound? (a) a resistor (b) a capacitor (c) a diode (d) a buzzer
  13. 13.What does a fuse do? (a) senses how bright it is (b) beeps for an alarm (c) blows if current is high (d) limits the current
  14. 14.🧩 Which component beeps for an alarm? (a) LDR (b) transistor (c) LED (d) buzzer
  15. 15.True or false: a resistor limits the current. (a) False (b) True
  16. 16.🧩 Which component turns a fan or wheels? (a) buzzer (b) fuse (c) motor (d) capacitor
  17. 17.True or false: an LED stores a little charge. (a) True (b) False
  18. 18.What does a transistor do? (a) glows using little power (b) has coloured bands (c) boosts a small signal (d) turns a fan or wheels
  19. 19.What does a resistor do? (a) beeps for an alarm (b) stores a little charge (c) has coloured bands (d) senses how bright it is
  20. 20.True or false: a motor makes things spin. (a) True (b) False
  21. 21.True or false: a fuse blows if current is high. (a) True (b) False
  22. 22.True or false: a motor senses how hot it is. (a) True (b) False
  23. 23.🧩 Which component smooths a wobbly supply? (a) LED (b) capacitor (c) motor (d) resistor
  24. 24.🧩 Which component makes a beeping sound? (a) capacitor (b) buzzer (c) LDR (d) thermistor
  25. 25.🧩 Which component has coloured bands? (a) resistor (b) buzzer (c) diode (d) transistor
  26. 26.True or false: a potentiometer makes a beeping sound. (a) False (b) True
  27. 27.🧩 Which part changes electrical energy into movement? (a) a motor (b) an LED (c) a fuse (d) a resistor
  28. 28.True or false: a transistor blows if current is high. (a) True (b) False
  29. 29.True or false: a buzzer beeps for an alarm. (a) False (b) True
  30. 30.What does a capacitor do? (a) makes a beeping sound (b) smooths a wobbly supply (c) beeps for an alarm (d) limits the current
  31. 31.True or false: a diode has coloured bands. (a) False (b) True
  32. 32.🧩 Which component senses how hot it is? (a) capacitor (b) thermistor (c) motor (d) buzzer
  33. 33.True or false: an LED glows using little power. (a) False (b) True
  34. 34.What does a capacitor do? (a) has coloured bands (b) senses how hot it is (c) blows if current is high (d) stores a little charge
  35. 35.What does a buzzer do? (a) lets current go one way (b) makes a beeping sound (c) senses how bright it is (d) has coloured bands
  36. 36.What does a motor do? (a) lets current go one way (b) senses how bright it is (c) makes things spin (d) limits the current
  37. 37.True or false: a fuse senses how bright it is. (a) False (b) True
  38. 38.True or false: a transistor boosts a small signal. (a) False (b) True
  39. 39.True or false: a fuse lets current go one way. (a) False (b) True
  40. 40.True or false: a capacitor smooths a wobbly supply. (a) True (b) False

Answer key

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

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