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In a Transistor Collector Current is Controlled By

By BYJU'S Exam Prep

Updated on: September 25th, 2023

Choose the right answer to the question in a transistor collector current is controlled by the following options and a detailed explanation.

  1. Collector voltage
  2. Base current
  3. Collector resistance
  4. All of the above

Answer – B. Base current

Base current and Collector base voltage control the collector current in a BJT.

Solution

The detailed solution to the question, in a transistor collector current, is controlled by provided here. 

The gradient of minority carrier concentration in the base area explains collector current. The ambipolar transport rates, in which the surplus majority and minority carriers flow at the same rate, are governed by the excess minority carriers due to low-level injection. There are significantly fewer excess carriers than normal majority carriers.

The collector current is around times the base current. Assuming that the collector current is times the base current and the base-emitter voltage is roughly constant, we may design certain fundamental circuits.

Hence, Option (B) is the correct answer.

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