Q. When the phototransistor is placed in the dark and a voltage is applied from collector to emitter, a certain amount of current will flow. This current is called the _
Solution:
- When the phototransistor is placed in the dark and a voltage is applied from collector to emitter, a certain amount of current will flow.
- This current is called the dark current (ID).
- This current consists of the leakage current of the collector-base junction multiplied by the dc current gain of the transistor.
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