Phototransistor Principles Quiz

The collector current in a phototransistor is produced by light, while in a regular BJT it is produced by a voltage source.

The base current in a phototransistor is produced and controlled by light, while in a regular BJT it is controlled by a voltage source. (correct)

The phototransistor has a higher dark current than a regular BJT.

The phototransistor has a lower base-emitter leakage current than a regular BJT.

To increase the collector current in the phototransistor.

To control the base current in the phototransistor.

To expose the C-B pn junction to incident light. (correct)

To reduce the dark current in the phototransistor.

The current produced when light strikes the photosensitive semiconductor base region.

The current that increases with light intensity.

The collector current in the presence of incident light.

The thermally generated C-to-E leakage current in the absence of incident light. (correct)

<p>It is produced and is directly proportional to the light intensity.</p> Signup and view all the answers

<p>It increases with the base current produced by light.</p> Signup and view all the answers