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Questions and Answers
Which of the following best describes a phototransistor?
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?
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?
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)
