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Electronics Worksheet: Electronic Components

Electronics lesson 17: Electronic components · Set 236 · 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 limits the current? (a) LED (b) thermistor (c) motor (d) resistor
  2. 2.What does a diode do? (a) makes things spin (b) senses how bright it is (c) glows using little power (d) lets current go one way
  3. 3.🧩 Which component makes a beeping sound? (a) buzzer (b) thermistor (c) fuse (d) diode
  4. 4.🧩 Which part changes electrical energy into movement? (a) a fuse (b) a motor (c) a resistor (d) an LED
  5. 5.What does a capacitor do? (a) stores a little charge (b) turns a fan or wheels (c) boosts a small signal (d) glows using little power
  6. 6.What does a resistor do? (a) limits the current (b) is a resistance knob (c) makes things spin (d) senses how bright it is
  7. 7.True or false: a diode lets current go one way. (a) False (b) True
  8. 8.🧩 Which component stores a little charge? (a) LED (b) capacitor (c) resistor (d) motor
  9. 9.True or false: a thermistor blows if current is high. (a) True (b) False
  10. 10.What does a motor do? (a) makes a beeping sound (b) limits the current (c) turns a fan or wheels (d) glows using little power
  11. 11.What does a capacitor do? (a) senses how bright it is (b) beeps for an alarm (c) has coloured bands (d) smooths a wobbly supply
  12. 12.What does an LED do? (a) stores a little charge (b) glows using little power (c) smooths a wobbly supply (d) limits the current
  13. 13.What does a potentiometer do? (a) boosts a small signal (b) is a resistance knob (c) lets current go one way (d) senses how hot it is
  14. 14.🧩 Which component makes things spin? (a) thermistor (b) motor (c) fuse (d) buzzer
  15. 15.🧩 Which part changes electrical energy into sound? (a) a resistor (b) a capacitor (c) a diode (d) a buzzer
  16. 16.What does a transistor do? (a) makes a beeping sound (b) boosts a small signal (c) has coloured bands (d) makes things spin
  17. 17.True or false: an LDR makes things spin. (a) False (b) True
  18. 18.What does a fuse do? (a) makes things spin (b) lets current go one way (c) blows if current is high (d) makes a beeping sound
  19. 19.🧩 Which component blows if current is high? (a) potentiometer (b) fuse (c) LED (d) buzzer
  20. 20.🧩 Which component smooths a wobbly supply? (a) diode (b) fuse (c) motor (d) capacitor
  21. 21.What does an LDR do? (a) senses how bright it is (b) lets current go one way (c) senses how hot it is (d) has coloured bands
  22. 22.🧩 A capacitor in a circuit can … (a) store charge briefly (b) spin a wheel (c) make light (d) measure heat
  23. 23.What does a buzzer do? (a) senses how bright it is (b) turns a fan or wheels (c) stores a little charge (d) makes a beeping sound
  24. 24.True or false: a potentiometer is a resistance knob. (a) True (b) False
  25. 25.True or false: a diode beeps for an alarm. (a) False (b) True
  26. 26.True or false: an LED smooths a wobbly supply. (a) False (b) True
  27. 27.What does a resistor do? (a) senses how hot it is (b) lets current go one way (c) beeps for an alarm (d) has coloured bands
  28. 28.🧩 Which component glows using little power? (a) resistor (b) motor (c) diode (d) LED
  29. 29.True or false: an LDR boosts a small signal. (a) True (b) False
  30. 30.True or false: an LED makes a beeping sound. (a) True (b) False
  31. 31.🧩 Which component senses how hot it is? (a) motor (b) thermistor (c) buzzer (d) fuse
  32. 32.True or false: a thermistor makes a beeping sound. (a) False (b) True
  33. 33.True or false: a fuse blows if current is high. (a) False (b) True
  34. 34.True or false: a potentiometer stores a little charge. (a) False (b) True
  35. 35.What does a motor do? (a) makes things spin (b) stores a little charge (c) smooths a wobbly supply (d) glows using little power
  36. 36.True or false: a motor makes things spin. (a) False (b) True
  37. 37.True or false: an LDR glows using little power. (a) True (b) False
  38. 38.🧩 Which component turns a fan or wheels? (a) potentiometer (b) diode (c) fuse (d) motor
  39. 39.True or false: a transistor limits the current. (a) False (b) True
  40. 40.True or false: a buzzer turns a fan or wheels. (a) True (b) False

Answer key

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

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