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Electronics Worksheet: Electronic Components

Electronics lesson 17: Electronic components · Set 136 · 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 transistor do? (a) smooths a wobbly supply (b) makes a beeping sound (c) boosts a small signal (d) limits the current
  2. 2.🧩 Which part changes electrical energy into sound? (a) a capacitor (b) a diode (c) a resistor (d) a buzzer
  3. 3.🧩 Which component makes a beeping sound? (a) LED (b) fuse (c) thermistor (d) buzzer
  4. 4.🧩 Which component beeps for an alarm? (a) potentiometer (b) LED (c) motor (d) buzzer
  5. 5.🧩 Which component smooths a wobbly supply? (a) buzzer (b) resistor (c) capacitor (d) LED
  6. 6.🧩 Which component blows if current is high? (a) buzzer (b) capacitor (c) fuse (d) motor
  7. 7.🧩 Which part changes electrical energy into movement? (a) a resistor (b) a fuse (c) a motor (d) an LED
  8. 8.What does a diode do? (a) boosts a small signal (b) stores a little charge (c) limits the current (d) lets current go one way
  9. 9.True or false: a buzzer is a resistance knob. (a) True (b) False
  10. 10.True or false: a fuse beeps for an alarm. (a) False (b) True
  11. 11.True or false: a buzzer makes a beeping sound. (a) True (b) False
  12. 12.What does a resistor do? (a) beeps for an alarm (b) blows if current is high (c) has coloured bands (d) turns a fan or wheels
  13. 13.True or false: a transistor makes a beeping sound. (a) True (b) False
  14. 14.🧩 A capacitor in a circuit can … (a) make light (b) store charge briefly (c) measure heat (d) spin a wheel
  15. 15.What does an LED do? (a) senses how bright it is (b) makes a beeping sound (c) glows using little power (d) turns a fan or wheels
  16. 16.🧩 Which component boosts a small signal? (a) LDR (b) motor (c) transistor (d) buzzer
  17. 17.🧩 Which component makes things spin? (a) fuse (b) thermistor (c) diode (d) motor
  18. 18.True or false: a capacitor beeps for an alarm. (a) True (b) False
  19. 19.True or false: a motor turns a fan or wheels. (a) False (b) True
  20. 20.What does a buzzer do? (a) smooths a wobbly supply (b) makes a beeping sound (c) stores a little charge (d) is a resistance knob
  21. 21.🧩 Which component has coloured bands? (a) buzzer (b) transistor (c) resistor (d) LDR
  22. 22.What does a potentiometer do? (a) smooths a wobbly supply (b) beeps for an alarm (c) turns a fan or wheels (d) is a resistance knob
  23. 23.🧩 Which component senses how hot it is? (a) thermistor (b) capacitor (c) buzzer (d) resistor
  24. 24.🧩 Which component limits the current? (a) potentiometer (b) LED (c) fuse (d) resistor
  25. 25.True or false: a resistor limits the current. (a) True (b) False
  26. 26.True or false: a resistor has coloured bands. (a) True (b) False
  27. 27.True or false: a resistor senses how bright it is. (a) True (b) False
  28. 28.True or false: a capacitor stores a little charge. (a) False (b) True
  29. 29.What does a thermistor do? (a) is a resistance knob (b) boosts a small signal (c) senses how hot it is (d) blows if current is high
  30. 30.🧩 Which component glows using little power? (a) capacitor (b) fuse (c) motor (d) LED
  31. 31.What does a fuse do? (a) makes a beeping sound (b) is a resistance knob (c) senses how bright it is (d) blows if current is high
  32. 32.True or false: an LED boosts a small signal. (a) True (b) False
  33. 33.🧩 Which component turns a fan or wheels? (a) buzzer (b) potentiometer (c) motor (d) transistor
  34. 34.🧩 Which component senses how bright it is? (a) resistor (b) LED (c) thermistor (d) LDR
  35. 35.What does a resistor do? (a) is a resistance knob (b) limits the current (c) lets current go one way (d) senses how hot it is
  36. 36.True or false: a motor makes things spin. (a) True (b) False
  37. 37.What does a motor do? (a) makes things spin (b) boosts a small signal (c) lets current go one way (d) blows if current is high
  38. 38.True or false: an LED glows using little power. (a) False (b) True
  39. 39.What does an LDR do? (a) lets current go one way (b) senses how bright it is (c) senses how hot it is (d) glows using little power
  40. 40.🧩 Which component stores a little charge? (a) LED (b) transistor (c) capacitor (d) LDR

Answer key

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

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