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NEET2020PhysicsSemiconductorsActual

For transistor action, which of the following statements is correct?

Options

  1. ABase, emitter and collector regions should have same size.
  2. BBoth emitter junction as well as the collector junction are forward biased.
  3. CThe base region must be very thin and lightly doped.
  4. DBase, emitter and collector regions should have same doping concentrations.

Correct answer

C. The base region must be very thin and lightly doped.

Step-by-step solution

For a transistor, its junction is lightly doped and the base region is very thin. Also, the emitter junction of a transistor must be forward-biased and collector junction should be reverse-biased.

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