Phototransistors Quiz
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Questions and Answers

Which of the following best describes a phototransistor?

  • A device that generates light
  • A device that converts electrical current into light
  • A device that converts light into electrical current (correct)
  • A device that measures the intensity of light

    • What is the main function of a phototransistor?

  • To measure the intensity of light
  • To generate light
  • To amplify electrical current
  • To convert light into electrical current (correct)

    • Which of the following is true about phototransistors?

  • They are used to generate light
  • They are used to amplify electrical current
  • They can only detect visible light
  • They can detect a wide range of light wavelengths (correct)

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