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Electronics Worksheet: Electronic Components

Electronics lesson 17: Electronic components · Set 660 · 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.True or false: a motor stores a little charge. (a) False (b) True
  2. 2.True or false: a fuse is a resistance knob. (a) False (b) True
  3. 3.What does a resistor do? (a) senses how bright it is (b) stores a little charge (c) turns a fan or wheels (d) has coloured bands
  4. 4.What does a capacitor do? (a) senses how hot it is (b) stores a little charge (c) turns a fan or wheels (d) makes things spin
  5. 5.🧩 Which part changes electrical energy into movement? (a) an LED (b) a fuse (c) a motor (d) a resistor
  6. 6.🧩 A capacitor in a circuit can … (a) spin a wheel (b) make light (c) store charge briefly (d) measure heat
  7. 7.🧩 Which component senses how hot it is? (a) thermistor (b) fuse (c) resistor (d) diode
  8. 8.🧩 Which component smooths a wobbly supply? (a) potentiometer (b) buzzer (c) fuse (d) capacitor
  9. 9.🧩 Which component glows using little power? (a) LED (b) fuse (c) buzzer (d) diode
  10. 10.🧩 Which component beeps for an alarm? (a) potentiometer (b) transistor (c) fuse (d) buzzer
  11. 11.🧩 Which part changes electrical energy into sound? (a) a capacitor (b) a buzzer (c) a diode (d) a resistor
  12. 12.What does a thermistor do? (a) makes things spin (b) lets current go one way (c) senses how hot it is (d) stores a little charge
  13. 13.🧩 Which component limits the current? (a) resistor (b) potentiometer (c) buzzer (d) LDR
  14. 14.True or false: a capacitor limits the current. (a) False (b) True
  15. 15.True or false: a capacitor has coloured bands. (a) False (b) True
  16. 16.What does a resistor do? (a) is a resistance knob (b) limits the current (c) makes things spin (d) blows if current is high
  17. 17.What does a fuse do? (a) limits the current (b) senses how hot it is (c) smooths a wobbly supply (d) blows if current is high
  18. 18.What does an LED do? (a) glows using little power (b) makes a beeping sound (c) beeps for an alarm (d) stores a little charge
  19. 19.🧩 Which component is a resistance knob? (a) capacitor (b) fuse (c) potentiometer (d) thermistor
  20. 20.What does a transistor do? (a) senses how hot it is (b) boosts a small signal (c) makes things spin (d) has coloured bands
  21. 21.True or false: a potentiometer is a resistance knob. (a) False (b) True
  22. 22.True or false: a resistor has coloured bands. (a) True (b) False
  23. 23.🧩 Which component blows if current is high? (a) fuse (b) transistor (c) LED (d) buzzer
  24. 24.True or false: a capacitor senses how hot it is. (a) True (b) False
  25. 25.🧩 Which component senses how bright it is? (a) capacitor (b) transistor (c) resistor (d) LDR
  26. 26.What does a buzzer do? (a) makes a beeping sound (b) glows using little power (c) senses how hot it is (d) has coloured bands
  27. 27.🧩 Which component turns a fan or wheels? (a) transistor (b) potentiometer (c) resistor (d) motor
  28. 28.What does a capacitor do? (a) makes a beeping sound (b) boosts a small signal (c) lets current go one way (d) smooths a wobbly supply
  29. 29.🧩 Which component boosts a small signal? (a) capacitor (b) motor (c) transistor (d) thermistor
  30. 30.True or false: a transistor boosts a small signal. (a) False (b) True
  31. 31.True or false: a fuse has coloured bands. (a) False (b) True
  32. 32.🧩 Which component stores a little charge? (a) LED (b) fuse (c) diode (d) capacitor
  33. 33.What does a diode do? (a) senses how bright it is (b) lets current go one way (c) boosts a small signal (d) glows using little power
  34. 34.What does an LDR do? (a) has coloured bands (b) is a resistance knob (c) senses how bright it is (d) smooths a wobbly supply
  35. 35.True or false: a thermistor turns a fan or wheels. (a) False (b) True
  36. 36.🧩 Which component makes things spin? (a) motor (b) LDR (c) transistor (d) capacitor
  37. 37.🧩 Which component lets current go one way? (a) diode (b) LDR (c) capacitor (d) potentiometer
  38. 38.True or false: a transistor makes a beeping sound. (a) True (b) False
  39. 39.True or false: a buzzer stores a little charge. (a) True (b) False
  40. 40.True or false: a potentiometer has coloured bands. (a) True (b) False

Answer key

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

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