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Electronics Worksheet: Electronic Components

Electronics lesson 17: Electronic components · Set 208 · 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 potentiometer do? (a) blows if current is high (b) turns a fan or wheels (c) is a resistance knob (d) lets current go one way
  2. 2.True or false: a diode senses how hot it is. (a) False (b) True
  3. 3.What does a capacitor do? (a) limits the current (b) lets current go one way (c) stores a little charge (d) blows if current is high
  4. 4.True or false: a diode makes things spin. (a) True (b) False
  5. 5.What does a buzzer do? (a) is a resistance knob (b) beeps for an alarm (c) stores a little charge (d) has coloured bands
  6. 6.True or false: a resistor has coloured bands. (a) True (b) False
  7. 7.🧩 Which component beeps for an alarm? (a) motor (b) potentiometer (c) buzzer (d) diode
  8. 8.What does a fuse do? (a) limits the current (b) glows using little power (c) boosts a small signal (d) blows if current is high
  9. 9.🧩 Which component smooths a wobbly supply? (a) fuse (b) LED (c) potentiometer (d) capacitor
  10. 10.True or false: a potentiometer limits the current. (a) False (b) True
  11. 11.True or false: a buzzer makes a beeping sound. (a) True (b) False
  12. 12.🧩 Which component boosts a small signal? (a) transistor (b) fuse (c) resistor (d) thermistor
  13. 13.🧩 Which part changes electrical energy into movement? (a) a resistor (b) a motor (c) a fuse (d) an LED
  14. 14.🧩 Which component glows using little power? (a) buzzer (b) diode (c) LED (d) capacitor
  15. 15.What does a thermistor do? (a) beeps for an alarm (b) blows if current is high (c) senses how bright it is (d) senses how hot it is
  16. 16.🧩 Which component has coloured bands? (a) potentiometer (b) resistor (c) motor (d) capacitor
  17. 17.🧩 A capacitor in a circuit can … (a) make light (b) measure heat (c) spin a wheel (d) store charge briefly
  18. 18.True or false: an LDR senses how hot it is. (a) True (b) False
  19. 19.True or false: an LED glows using little power. (a) False (b) True
  20. 20.🧩 Which part changes electrical energy into sound? (a) a capacitor (b) a buzzer (c) a resistor (d) a diode
  21. 21.True or false: a thermistor limits the current. (a) True (b) False
  22. 22.True or false: a fuse blows if current is high. (a) True (b) False
  23. 23.🧩 Which component limits the current? (a) resistor (b) LED (c) fuse (d) capacitor
  24. 24.What does a transistor do? (a) boosts a small signal (b) turns a fan or wheels (c) blows if current is high (d) lets current go one way
  25. 25.🧩 Which component is a resistance knob? (a) buzzer (b) potentiometer (c) fuse (d) motor
  26. 26.🧩 Which component lets current go one way? (a) diode (b) thermistor (c) LED (d) fuse
  27. 27.🧩 Which component makes a beeping sound? (a) LDR (b) LED (c) capacitor (d) buzzer
  28. 28.What does a resistor do? (a) stores a little charge (b) glows using little power (c) senses how hot it is (d) limits the current
  29. 29.True or false: a potentiometer is a resistance knob. (a) True (b) False
  30. 30.What does an LED do? (a) glows using little power (b) turns a fan or wheels (c) is a resistance knob (d) stores a little charge
  31. 31.What does a resistor do? (a) has coloured bands (b) is a resistance knob (c) beeps for an alarm (d) turns a fan or wheels
  32. 32.🧩 Which component makes things spin? (a) buzzer (b) fuse (c) motor (d) potentiometer
  33. 33.True or false: a buzzer is a resistance knob. (a) True (b) False
  34. 34.What does a capacitor do? (a) smooths a wobbly supply (b) glows using little power (c) beeps for an alarm (d) makes things spin
  35. 35.🧩 Which component stores a little charge? (a) buzzer (b) resistor (c) potentiometer (d) capacitor
  36. 36.True or false: a resistor limits the current. (a) False (b) True
  37. 37.True or false: an LDR senses how bright it is. (a) True (b) False
  38. 38.True or false: a resistor glows using little power. (a) False (b) True
  39. 39.What does a diode do? (a) limits the current (b) lets current go one way (c) makes things spin (d) senses how hot it is
  40. 40.True or false: an LED beeps for an alarm. (a) True (b) False

Answer key

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

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