Starter quiz

  • What is a switch?
    • a device that produces light
    • a device that turns electrical appliances on and off  ✓
    • a device in a circuit that produces sound
  • When a circuit is <span class="blank">______</span>, all of the components are correctly connected and there are no gaps.
    When a circuit is ______, all of the components are correctly connected and there are no gaps.
    • 'complete' ✓
  • What does a light sensor do?
    What does a light sensor do?
    • controls the brightness of a bulb
    • reduces the brightness of a bulb
    • measures the brightness of a bulb  ✓
  • Match the measurement to the unit.
    • volume of sound
      decibels (dB) ✓
    • brightness of light
      lux (lx) ✓
  • How does voltage affect the brightness of a bulb?
    How does voltage affect the brightness of a bulb?
    • increasing the voltage does not affect the brightness of a bulb
    • increasing the voltage increases the brightness of a bulb  ✓
    • increasing the voltage decreases the brightness of a bulb
  • How does changing the position of a buzzer in a circuit affect its volume?
    How does changing the position of a buzzer in a circuit affect its volume?
    • changing the position of a buzzer in a circuit makes it quieter
    • changing the position of a buzzer in a circuit makes it louder
    • changing the position of a buzzer in a circuit does not affect its volume  ✓
+