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Electronics Worksheet: Electronic Components

Electronics lesson 17: Electronic components · Set 569 · 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.🧩 Which component smooths a wobbly supply? (a) buzzer (b) motor (c) capacitor (d) fuse
  2. 2.🧩 Which component limits the current? (a) buzzer (b) diode (c) thermistor (d) resistor
  3. 3.True or false: a resistor lets current go one way. (a) False (b) True
  4. 4.🧩 Which component makes things spin? (a) resistor (b) motor (c) LDR (d) LED
  5. 5.What does a motor do? (a) senses how bright it is (b) makes things spin (c) stores a little charge (d) boosts a small signal
  6. 6.🧩 Which part changes electrical energy into sound? (a) a capacitor (b) a buzzer (c) a resistor (d) a diode
  7. 7.What does a diode do? (a) boosts a small signal (b) has coloured bands (c) makes things spin (d) lets current go one way
  8. 8.What does a resistor do? (a) blows if current is high (b) beeps for an alarm (c) makes a beeping sound (d) has coloured bands
  9. 9.🧩 Which component makes a beeping sound? (a) potentiometer (b) buzzer (c) thermistor (d) LDR
  10. 10.True or false: a capacitor stores a little charge. (a) True (b) False
  11. 11.🧩 Which part changes electrical energy into movement? (a) an LED (b) a resistor (c) a motor (d) a fuse
  12. 12.🧩 Which component beeps for an alarm? (a) buzzer (b) LDR (c) diode (d) resistor
  13. 13.🧩 Which component boosts a small signal? (a) buzzer (b) transistor (c) motor (d) LED
  14. 14.What does a fuse do? (a) turns a fan or wheels (b) smooths a wobbly supply (c) stores a little charge (d) blows if current is high
  15. 15.🧩 Which component turns a fan or wheels? (a) motor (b) LDR (c) resistor (d) transistor
  16. 16.What does a buzzer do? (a) beeps for an alarm (b) has coloured bands (c) lets current go one way (d) is a resistance knob
  17. 17.🧩 Which component lets current go one way? (a) diode (b) transistor (c) capacitor (d) motor
  18. 18.🧩 A capacitor in a circuit can … (a) make light (b) spin a wheel (c) measure heat (d) store charge briefly
  19. 19.What does a thermistor do? (a) senses how hot it is (b) lets current go one way (c) has coloured bands (d) boosts a small signal
  20. 20.What does a transistor do? (a) beeps for an alarm (b) boosts a small signal (c) stores a little charge (d) senses how bright it is
  21. 21.What does a potentiometer do? (a) is a resistance knob (b) boosts a small signal (c) senses how bright it is (d) smooths a wobbly supply
  22. 22.What does a capacitor do? (a) stores a little charge (b) makes things spin (c) blows if current is high (d) beeps for an alarm
  23. 23.🧩 Which component senses how hot it is? (a) resistor (b) thermistor (c) buzzer (d) diode
  24. 24.True or false: a thermistor boosts a small signal. (a) False (b) True
  25. 25.True or false: a potentiometer boosts a small signal. (a) False (b) True
  26. 26.True or false: a diode limits the current. (a) True (b) False
  27. 27.True or false: a transistor boosts a small signal. (a) True (b) False
  28. 28.🧩 Which component senses how bright it is? (a) transistor (b) resistor (c) LDR (d) fuse
  29. 29.🧩 Which component has coloured bands? (a) diode (b) resistor (c) buzzer (d) potentiometer
  30. 30.What does an LED do? (a) turns a fan or wheels (b) beeps for an alarm (c) glows using little power (d) smooths a wobbly supply
  31. 31.True or false: a transistor beeps for an alarm. (a) True (b) False
  32. 32.True or false: a fuse is a resistance knob. (a) False (b) True
  33. 33.True or false: a thermistor senses how hot it is. (a) False (b) True
  34. 34.True or false: a capacitor limits the current. (a) False (b) True
  35. 35.True or false: an LDR makes a beeping sound. (a) False (b) True
  36. 36.What does a buzzer do? (a) blows if current is high (b) senses how bright it is (c) makes a beeping sound (d) glows using little power
  37. 37.True or false: an LED lets current go one way. (a) False (b) True
  38. 38.What does a motor do? (a) beeps for an alarm (b) has coloured bands (c) limits the current (d) turns a fan or wheels
  39. 39.True or false: a capacitor glows using little power. (a) False (b) True
  40. 40.True or false: a capacitor smooths a wobbly supply. (a) True (b) False

Answer key

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

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