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Electronics Worksheet: Electronic Components

Electronics lesson 17: Electronic components · Set 256 · 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.What does a fuse do? (a) makes a beeping sound (b) makes things spin (c) boosts a small signal (d) blows if current is high
  2. 2.What does a buzzer do? (a) smooths a wobbly supply (b) is a resistance knob (c) limits the current (d) beeps for an alarm
  3. 3.What does a transistor do? (a) lets current go one way (b) boosts a small signal (c) senses how hot it is (d) makes things spin
  4. 4.What does an LED do? (a) stores a little charge (b) senses how hot it is (c) smooths a wobbly supply (d) glows using little power
  5. 5.What does a resistor do? (a) boosts a small signal (b) makes a beeping sound (c) stores a little charge (d) limits the current
  6. 6.What does a diode do? (a) turns a fan or wheels (b) is a resistance knob (c) has coloured bands (d) lets current go one way
  7. 7.🧩 Which component lets current go one way? (a) diode (b) potentiometer (c) LED (d) resistor
  8. 8.What does a thermistor do? (a) beeps for an alarm (b) senses how hot it is (c) boosts a small signal (d) glows using little power
  9. 9.🧩 A capacitor in a circuit can … (a) spin a wheel (b) measure heat (c) store charge briefly (d) make light
  10. 10.🧩 Which part changes electrical energy into sound? (a) a resistor (b) a buzzer (c) a diode (d) a capacitor
  11. 11.What does a motor do? (a) makes things spin (b) limits the current (c) boosts a small signal (d) stores a little charge
  12. 12.What does a capacitor do? (a) smooths a wobbly supply (b) lets current go one way (c) senses how hot it is (d) makes a beeping sound
  13. 13.True or false: a fuse blows if current is high. (a) True (b) False
  14. 14.🧩 Which component makes a beeping sound? (a) fuse (b) capacitor (c) thermistor (d) buzzer
  15. 15.True or false: a capacitor smooths a wobbly supply. (a) True (b) False
  16. 16.🧩 Which component makes things spin? (a) potentiometer (b) motor (c) capacitor (d) LED
  17. 17.🧩 Which component senses how bright it is? (a) capacitor (b) potentiometer (c) LDR (d) fuse
  18. 18.True or false: a capacitor is a resistance knob. (a) True (b) False
  19. 19.🧩 Which component is a resistance knob? (a) potentiometer (b) resistor (c) buzzer (d) capacitor
  20. 20.What does a capacitor do? (a) senses how bright it is (b) stores a little charge (c) has coloured bands (d) makes a beeping sound
  21. 21.True or false: a thermistor senses how hot it is. (a) True (b) False
  22. 22.🧩 Which component senses how hot it is? (a) thermistor (b) motor (c) fuse (d) buzzer
  23. 23.🧩 Which component boosts a small signal? (a) potentiometer (b) thermistor (c) buzzer (d) transistor
  24. 24.True or false: a transistor boosts a small signal. (a) True (b) False
  25. 25.🧩 Which part changes electrical energy into movement? (a) a fuse (b) a motor (c) a resistor (d) an LED
  26. 26.True or false: an LED glows using little power. (a) False (b) True
  27. 27.🧩 Which component turns a fan or wheels? (a) diode (b) motor (c) resistor (d) LDR
  28. 28.True or false: a buzzer beeps for an alarm. (a) True (b) False
  29. 29.🧩 Which component has coloured bands? (a) resistor (b) LDR (c) potentiometer (d) capacitor
  30. 30.True or false: a diode lets current go one way. (a) False (b) True
  31. 31.🧩 Which component glows using little power? (a) buzzer (b) LED (c) thermistor (d) transistor
  32. 32.True or false: a capacitor senses how bright it is. (a) True (b) False
  33. 33.🧩 Which component stores a little charge? (a) potentiometer (b) diode (c) thermistor (d) capacitor
  34. 34.True or false: a capacitor stores a little charge. (a) False (b) True
  35. 35.🧩 Which component limits the current? (a) buzzer (b) capacitor (c) diode (d) resistor
  36. 36.True or false: a capacitor has coloured bands. (a) True (b) False
  37. 37.True or false: an LED blows if current is high. (a) True (b) False
  38. 38.True or false: an LED stores a little charge. (a) False (b) True
  39. 39.True or false: a potentiometer is a resistance knob. (a) False (b) True
  40. 40.What does a buzzer do? (a) makes things spin (b) boosts a small signal (c) makes a beeping sound (d) senses how hot it is

Answer key

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

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