Which of the following is the least doped region in a transistor?

Either emitter or collector

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Base

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Emitter

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Collector

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Solution

The correct option is B Base
In transistors, the bases are lightly doped and very thin, it passes most of the emitter-injected electrons on to the collector. The doping level of collector is intermediate between the heavy doping of emitter and the light doping of the base.

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Similar questions

For transistor action, which of the following statements are correct:

(a) Base, emitter and collector regions should have similar size and doping concentrations.

(b) The base region must be very thin and lightly doped.

(d) Both the emitter junction as well as the collector junction are forward biased.

Least doped region in a transistor

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