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Electronics Worksheet: Electronic Components

Electronics lesson 17: Electronic components · Set 510 · 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: an LED glows using little power. (a) True (b) False
  2. 2.What does a motor do? (a) limits the current (b) blows if current is high (c) lets current go one way (d) turns a fan or wheels
  3. 3.What does a buzzer do? (a) senses how bright it is (b) has coloured bands (c) blows if current is high (d) beeps for an alarm
  4. 4.True or false: a diode lets current go one way. (a) True (b) False
  5. 5.🧩 Which part changes electrical energy into sound? (a) a resistor (b) a diode (c) a buzzer (d) a capacitor
  6. 6.What does a buzzer do? (a) blows if current is high (b) boosts a small signal (c) senses how bright it is (d) makes a beeping sound
  7. 7.What does a diode do? (a) senses how hot it is (b) smooths a wobbly supply (c) stores a little charge (d) lets current go one way
  8. 8.What does an LDR do? (a) makes things spin (b) senses how bright it is (c) smooths a wobbly supply (d) blows if current is high
  9. 9.🧩 Which component limits the current? (a) LDR (b) motor (c) fuse (d) resistor
  10. 10.🧩 Which component glows using little power? (a) buzzer (b) thermistor (c) LDR (d) LED
  11. 11.🧩 A capacitor in a circuit can … (a) make light (b) spin a wheel (c) store charge briefly (d) measure heat
  12. 12.🧩 Which part changes electrical energy into movement? (a) an LED (b) a resistor (c) a fuse (d) a motor
  13. 13.What does an LED do? (a) stores a little charge (b) makes a beeping sound (c) is a resistance knob (d) glows using little power
  14. 14.🧩 Which component makes a beeping sound? (a) thermistor (b) LED (c) buzzer (d) LDR
  15. 15.🧩 Which component senses how bright it is? (a) LED (b) capacitor (c) LDR (d) diode
  16. 16.True or false: a motor turns a fan or wheels. (a) True (b) False
  17. 17.🧩 Which component blows if current is high? (a) potentiometer (b) fuse (c) buzzer (d) resistor
  18. 18.What does a potentiometer do? (a) is a resistance knob (b) senses how bright it is (c) makes a beeping sound (d) beeps for an alarm
  19. 19.What does a resistor do? (a) blows if current is high (b) stores a little charge (c) turns a fan or wheels (d) limits the current
  20. 20.True or false: a motor has coloured bands. (a) False (b) True
  21. 21.True or false: a buzzer beeps for an alarm. (a) True (b) False
  22. 22.🧩 Which component stores a little charge? (a) buzzer (b) capacitor (c) motor (d) fuse
  23. 23.🧩 Which component smooths a wobbly supply? (a) LED (b) thermistor (c) capacitor (d) potentiometer
  24. 24.🧩 Which component makes things spin? (a) LED (b) motor (c) capacitor (d) transistor
  25. 25.🧩 Which component lets current go one way? (a) diode (b) resistor (c) buzzer (d) thermistor
  26. 26.🧩 Which component limits the current? (a) thermistor (b) resistor (c) LED (d) buzzer
  27. 27.True or false: a motor stores a little charge. (a) True (b) False
  28. 28.True or false: an LDR has coloured bands. (a) False (b) True
  29. 29.True or false: a motor blows if current is high. (a) False (b) True
  30. 30.True or false: a motor makes things spin. (a) False (b) True
  31. 31.True or false: a capacitor stores a little charge. (a) True (b) False
  32. 32.True or false: a thermistor senses how hot it is. (a) True (b) False
  33. 33.🧩 Which component beeps for an alarm? (a) LDR (b) fuse (c) buzzer (d) capacitor
  34. 34.True or false: a diode boosts a small signal. (a) True (b) False
  35. 35.What does a capacitor do? (a) stores a little charge (b) makes a beeping sound (c) blows if current is high (d) beeps for an alarm
  36. 36.True or false: a fuse is a resistance knob. (a) False (b) True
  37. 37.What does a capacitor do? (a) smooths a wobbly supply (b) beeps for an alarm (c) is a resistance knob (d) blows if current is high
  38. 38.True or false: a fuse blows if current is high. (a) False (b) True
  39. 39.What does a motor do? (a) senses how bright it is (b) glows using little power (c) makes things spin (d) blows if current is high
  40. 40.True or false: an LDR turns a fan or wheels. (a) False (b) True

Answer key

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

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