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Electronics Worksheet: Electronic Components

Electronics lesson 17: Electronic components · Set 693 · 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.🧩 Which component blows if current is high? (a) fuse (b) capacitor (c) potentiometer (d) diode
  2. 2.🧩 Which component boosts a small signal? (a) motor (b) transistor (c) potentiometer (d) diode
  3. 3.🧩 Which component has coloured bands? (a) fuse (b) resistor (c) transistor (d) diode
  4. 4.🧩 Which component senses how hot it is? (a) resistor (b) thermistor (c) transistor (d) capacitor
  5. 5.What does a thermistor do? (a) senses how hot it is (b) boosts a small signal (c) blows if current is high (d) limits the current
  6. 6.🧩 Which part changes electrical energy into movement? (a) an LED (b) a motor (c) a resistor (d) a fuse
  7. 7.🧩 Which component senses how bright it is? (a) resistor (b) transistor (c) LDR (d) LED
  8. 8.🧩 Which component glows using little power? (a) diode (b) LED (c) motor (d) thermistor
  9. 9.True or false: a fuse blows if current is high. (a) False (b) True
  10. 10.🧩 Which component makes things spin? (a) buzzer (b) resistor (c) motor (d) LDR
  11. 11.What does a capacitor do? (a) turns a fan or wheels (b) boosts a small signal (c) stores a little charge (d) makes a beeping sound
  12. 12.What does a transistor do? (a) boosts a small signal (b) senses how hot it is (c) limits the current (d) senses how bright it is
  13. 13.🧩 Which part changes electrical energy into sound? (a) a capacitor (b) a resistor (c) a diode (d) a buzzer
  14. 14.True or false: a buzzer makes a beeping sound. (a) False (b) True
  15. 15.What does a resistor do? (a) boosts a small signal (b) limits the current (c) blows if current is high (d) beeps for an alarm
  16. 16.What does an LED do? (a) limits the current (b) glows using little power (c) senses how bright it is (d) smooths a wobbly supply
  17. 17.🧩 A capacitor in a circuit can … (a) spin a wheel (b) make light (c) measure heat (d) store charge briefly
  18. 18.True or false: a resistor has coloured bands. (a) True (b) False
  19. 19.What does a buzzer do? (a) makes a beeping sound (b) stores a little charge (c) lets current go one way (d) senses how bright it is
  20. 20.True or false: a motor has coloured bands. (a) True (b) False
  21. 21.What does an LDR do? (a) makes things spin (b) blows if current is high (c) beeps for an alarm (d) senses how bright it is
  22. 22.True or false: a motor limits the current. (a) False (b) True
  23. 23.True or false: a motor stores a little charge. (a) False (b) True
  24. 24.🧩 Which component lets current go one way? (a) capacitor (b) transistor (c) thermistor (d) diode
  25. 25.True or false: a capacitor makes a beeping sound. (a) False (b) True
  26. 26.What does a fuse do? (a) stores a little charge (b) limits the current (c) blows if current is high (d) senses how hot it is
  27. 27.What does a potentiometer do? (a) makes things spin (b) beeps for an alarm (c) is a resistance knob (d) boosts a small signal
  28. 28.🧩 Which component turns a fan or wheels? (a) fuse (b) thermistor (c) motor (d) capacitor
  29. 29.True or false: a buzzer beeps for an alarm. (a) True (b) False
  30. 30.🧩 Which component limits the current? (a) thermistor (b) motor (c) LDR (d) resistor
  31. 31.What does a capacitor do? (a) senses how hot it is (b) smooths a wobbly supply (c) makes a beeping sound (d) blows if current is high
  32. 32.🧩 Which component stores a little charge? (a) LDR (b) motor (c) potentiometer (d) capacitor
  33. 33.🧩 Which component is a resistance knob? (a) motor (b) thermistor (c) capacitor (d) potentiometer
  34. 34.True or false: a resistor stores a little charge. (a) True (b) False
  35. 35.True or false: a capacitor smooths a wobbly supply. (a) True (b) False
  36. 36.What does a resistor do? (a) senses how hot it is (b) beeps for an alarm (c) has coloured bands (d) senses how bright it is
  37. 37.True or false: a fuse is a resistance knob. (a) True (b) False
  38. 38.True or false: a transistor boosts a small signal. (a) False (b) True
  39. 39.True or false: a fuse turns a fan or wheels. (a) True (b) False
  40. 40.True or false: a diode turns a fan or wheels. (a) True (b) False

Answer key

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

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