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Electronics Worksheet: Electronic Components

Electronics lesson 17: Electronic components · Set 57 · 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 stores a little charge? (a) fuse (b) capacitor (c) thermistor (d) potentiometer
  2. 2.True or false: a thermistor senses how hot it is. (a) False (b) True
  3. 3.🧩 Which component lets current go one way? (a) LED (b) resistor (c) diode (d) potentiometer
  4. 4.What does a fuse do? (a) stores a little charge (b) blows if current is high (c) is a resistance knob (d) makes a beeping sound
  5. 5.🧩 Which component makes a beeping sound? (a) motor (b) diode (c) resistor (d) buzzer
  6. 6.What does a resistor do? (a) beeps for an alarm (b) makes things spin (c) has coloured bands (d) blows if current is high
  7. 7.🧩 A capacitor in a circuit can … (a) measure heat (b) store charge briefly (c) make light (d) spin a wheel
  8. 8.True or false: a capacitor is a resistance knob. (a) False (b) True
  9. 9.🧩 Which component boosts a small signal? (a) transistor (b) diode (c) fuse (d) motor
  10. 10.True or false: a buzzer makes a beeping sound. (a) True (b) False
  11. 11.True or false: a transistor makes things spin. (a) False (b) True
  12. 12.True or false: a fuse has coloured bands. (a) True (b) False
  13. 13.True or false: a transistor makes a beeping sound. (a) False (b) True
  14. 14.🧩 Which component makes things spin? (a) buzzer (b) capacitor (c) thermistor (d) motor
  15. 15.What does a thermistor do? (a) makes things spin (b) stores a little charge (c) blows if current is high (d) senses how hot it is
  16. 16.What does a capacitor do? (a) beeps for an alarm (b) senses how bright it is (c) smooths a wobbly supply (d) makes things spin
  17. 17.🧩 Which part changes electrical energy into movement? (a) an LED (b) a motor (c) a fuse (d) a resistor
  18. 18.🧩 Which component beeps for an alarm? (a) buzzer (b) transistor (c) fuse (d) LED
  19. 19.True or false: an LDR senses how bright it is. (a) False (b) True
  20. 20.🧩 Which component has coloured bands? (a) motor (b) potentiometer (c) resistor (d) diode
  21. 21.What does a buzzer do? (a) turns a fan or wheels (b) beeps for an alarm (c) is a resistance knob (d) limits the current
  22. 22.What does a motor do? (a) senses how hot it is (b) makes things spin (c) glows using little power (d) has coloured bands
  23. 23.🧩 Which component glows using little power? (a) resistor (b) LED (c) thermistor (d) motor
  24. 24.🧩 Which component senses how bright it is? (a) fuse (b) buzzer (c) potentiometer (d) LDR
  25. 25.What does an LED do? (a) glows using little power (b) lets current go one way (c) makes a beeping sound (d) smooths a wobbly supply
  26. 26.True or false: a capacitor smooths a wobbly supply. (a) True (b) False
  27. 27.🧩 Which part changes electrical energy into sound? (a) a diode (b) a capacitor (c) a buzzer (d) a resistor
  28. 28.True or false: a resistor limits the current. (a) False (b) True
  29. 29.🧩 Which component limits the current? (a) buzzer (b) resistor (c) diode (d) motor
  30. 30.🧩 Which component blows if current is high? (a) LED (b) capacitor (c) fuse (d) motor
  31. 31.What does a buzzer do? (a) smooths a wobbly supply (b) makes things spin (c) lets current go one way (d) makes a beeping sound
  32. 32.🧩 Which component smooths a wobbly supply? (a) capacitor (b) motor (c) fuse (d) transistor
  33. 33.True or false: a diode lets current go one way. (a) False (b) True
  34. 34.What does a transistor do? (a) senses how hot it is (b) boosts a small signal (c) blows if current is high (d) limits the current
  35. 35.What does a diode do? (a) has coloured bands (b) lets current go one way (c) is a resistance knob (d) limits the current
  36. 36.What does a potentiometer do? (a) is a resistance knob (b) limits the current (c) makes things spin (d) has coloured bands
  37. 37.🧩 Which component is a resistance knob? (a) potentiometer (b) LDR (c) motor (d) resistor
  38. 38.True or false: a transistor boosts a small signal. (a) False (b) True
  39. 39.True or false: a fuse glows using little power. (a) True (b) False
  40. 40.True or false: a buzzer lets current go one way. (a) False (b) True

Answer key

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

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