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Electronics Worksheet: Electronic Components

Electronics lesson 17: Electronic components · Set 496 · 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 part changes electrical energy into movement? (a) a motor (b) a fuse (c) an LED (d) a resistor
  2. 2.🧩 Which component is a resistance knob? (a) diode (b) potentiometer (c) fuse (d) transistor
  3. 3.🧩 A capacitor in a circuit can … (a) spin a wheel (b) measure heat (c) make light (d) store charge briefly
  4. 4.What does a motor do? (a) limits the current (b) makes things spin (c) lets current go one way (d) blows if current is high
  5. 5.🧩 Which component smooths a wobbly supply? (a) fuse (b) motor (c) capacitor (d) LED
  6. 6.True or false: a thermistor senses how hot it is. (a) True (b) False
  7. 7.🧩 Which component makes things spin? (a) thermistor (b) diode (c) LED (d) motor
  8. 8.True or false: an LED limits the current. (a) True (b) False
  9. 9.🧩 Which component limits the current? (a) resistor (b) transistor (c) thermistor (d) LED
  10. 10.What does a resistor do? (a) turns a fan or wheels (b) limits the current (c) blows if current is high (d) stores a little charge
  11. 11.What does an LED do? (a) stores a little charge (b) glows using little power (c) smooths a wobbly supply (d) makes a beeping sound
  12. 12.🧩 Which component has coloured bands? (a) capacitor (b) fuse (c) resistor (d) potentiometer
  13. 13.🧩 Which component beeps for an alarm? (a) motor (b) buzzer (c) capacitor (d) fuse
  14. 14.True or false: a motor turns a fan or wheels. (a) False (b) True
  15. 15.🧩 Which part changes electrical energy into sound? (a) a diode (b) a capacitor (c) a resistor (d) a buzzer
  16. 16.True or false: a motor has coloured bands. (a) True (b) False
  17. 17.True or false: an LED glows using little power. (a) False (b) True
  18. 18.True or false: a motor makes things spin. (a) True (b) False
  19. 19.🧩 Which component senses how hot it is? (a) buzzer (b) thermistor (c) fuse (d) transistor
  20. 20.🧩 Which component glows using little power? (a) capacitor (b) LED (c) resistor (d) thermistor
  21. 21.🧩 Which component turns a fan or wheels? (a) motor (b) diode (c) transistor (d) LDR
  22. 22.True or false: a buzzer has coloured bands. (a) False (b) True
  23. 23.What does a potentiometer do? (a) blows if current is high (b) makes a beeping sound (c) makes things spin (d) is a resistance knob
  24. 24.True or false: a thermistor stores a little charge. (a) False (b) True
  25. 25.True or false: a thermistor has coloured bands. (a) True (b) False
  26. 26.What does a diode do? (a) stores a little charge (b) lets current go one way (c) has coloured bands (d) blows if current is high
  27. 27.True or false: a capacitor boosts a small signal. (a) False (b) True
  28. 28.What does a thermistor do? (a) senses how hot it is (b) glows using little power (c) lets current go one way (d) is a resistance knob
  29. 29.🧩 Which component blows if current is high? (a) fuse (b) resistor (c) potentiometer (d) transistor
  30. 30.True or false: a potentiometer makes a beeping sound. (a) True (b) False
  31. 31.True or false: a resistor has coloured bands. (a) True (b) False
  32. 32.What does an LDR do? (a) limits the current (b) blows if current is high (c) senses how bright it is (d) senses how hot it is
  33. 33.True or false: a fuse has coloured bands. (a) True (b) False
  34. 34.🧩 Which component senses how bright it is? (a) buzzer (b) resistor (c) LDR (d) fuse
  35. 35.True or false: a buzzer makes a beeping sound. (a) True (b) False
  36. 36.True or false: an LED makes a beeping sound. (a) False (b) True
  37. 37.What does a fuse do? (a) limits the current (b) makes a beeping sound (c) blows if current is high (d) turns a fan or wheels
  38. 38.True or false: a resistor turns a fan or wheels. (a) True (b) False
  39. 39.🧩 Which component stores a little charge? (a) transistor (b) capacitor (c) resistor (d) thermistor
  40. 40.What does a capacitor do? (a) makes a beeping sound (b) limits the current (c) stores a little charge (d) is a resistance knob

Answer key

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

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