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Physics · PYQ NEET UG 2020

हिन्दी

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

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

Correct answer · Option 3

The base region must be very thin and lightly doped.

Explanation

In a standard transistor, the base region is kept very thin and lightly doped so that it can pass most of the charge carriers injected by the emitter to the collector.
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