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Electronics Worksheet: Electronic Components

Electronics lesson 17: Electronic components · Set 271 · 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 motor do? (a) has coloured bands (b) makes things spin (c) stores a little charge (d) is a resistance knob
  2. 2.🧩 Which component makes things spin? (a) thermistor (b) capacitor (c) LED (d) motor
  3. 3.🧩 Which part changes electrical energy into movement? (a) a fuse (b) an LED (c) a resistor (d) a motor
  4. 4.True or false: a resistor limits the current. (a) True (b) False
  5. 5.True or false: a motor senses how bright it is. (a) False (b) True
  6. 6.🧩 Which part changes electrical energy into sound? (a) a resistor (b) a capacitor (c) a diode (d) a buzzer
  7. 7.🧩 A capacitor in a circuit can … (a) measure heat (b) make light (c) store charge briefly (d) spin a wheel
  8. 8.What does a capacitor do? (a) senses how bright it is (b) stores a little charge (c) limits the current (d) beeps for an alarm
  9. 9.What does a resistor do? (a) senses how hot it is (b) smooths a wobbly supply (c) turns a fan or wheels (d) has coloured bands
  10. 10.True or false: a capacitor stores a little charge. (a) True (b) False
  11. 11.What does a thermistor do? (a) is a resistance knob (b) blows if current is high (c) senses how hot it is (d) makes things spin
  12. 12.🧩 Which component senses how hot it is? (a) motor (b) LED (c) thermistor (d) diode
  13. 13.True or false: a capacitor limits the current. (a) True (b) False
  14. 14.🧩 Which component makes a beeping sound? (a) resistor (b) buzzer (c) capacitor (d) LED
  15. 15.True or false: a buzzer beeps for an alarm. (a) True (b) False
  16. 16.🧩 Which component boosts a small signal? (a) buzzer (b) transistor (c) fuse (d) thermistor
  17. 17.What does an LED do? (a) has coloured bands (b) glows using little power (c) lets current go one way (d) turns a fan or wheels
  18. 18.🧩 Which component blows if current is high? (a) capacitor (b) motor (c) buzzer (d) fuse
  19. 19.🧩 Which component smooths a wobbly supply? (a) transistor (b) thermistor (c) resistor (d) capacitor
  20. 20.🧩 Which component stores a little charge? (a) capacitor (b) LDR (c) buzzer (d) motor
  21. 21.What does a diode do? (a) is a resistance knob (b) lets current go one way (c) boosts a small signal (d) turns a fan or wheels
  22. 22.True or false: a resistor stores a little charge. (a) False (b) True
  23. 23.True or false: an LED blows if current is high. (a) True (b) False
  24. 24.🧩 Which component glows using little power? (a) diode (b) LED (c) buzzer (d) motor
  25. 25.🧩 Which component beeps for an alarm? (a) buzzer (b) motor (c) LED (d) LDR
  26. 26.🧩 Which component has coloured bands? (a) resistor (b) diode (c) potentiometer (d) buzzer
  27. 27.True or false: a fuse glows using little power. (a) False (b) True
  28. 28.True or false: a thermistor smooths a wobbly supply. (a) True (b) False
  29. 29.What does a buzzer do? (a) makes things spin (b) beeps for an alarm (c) boosts a small signal (d) turns a fan or wheels
  30. 30.🧩 Which component lets current go one way? (a) capacitor (b) fuse (c) diode (d) transistor
  31. 31.True or false: a buzzer senses how hot it is. (a) False (b) True
  32. 32.True or false: a fuse blows if current is high. (a) False (b) True
  33. 33.True or false: a transistor smooths a wobbly supply. (a) True (b) False
  34. 34.True or false: an LED glows using little power. (a) True (b) False
  35. 35.True or false: a capacitor lets current go one way. (a) False (b) True
  36. 36.What does a capacitor do? (a) smooths a wobbly supply (b) lets current go one way (c) limits the current (d) boosts a small signal
  37. 37.🧩 Which component is a resistance knob? (a) resistor (b) potentiometer (c) LED (d) LDR
  38. 38.What does a transistor do? (a) turns a fan or wheels (b) boosts a small signal (c) is a resistance knob (d) makes a beeping sound
  39. 39.True or false: a fuse beeps for an alarm. (a) False (b) True
  40. 40.True or false: a thermistor makes things spin. (a) True (b) False

Answer key

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

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