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Calculate the value of β for α=.8.

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Calculate the value of β for α=.8.

(a) 2

(b) 8

(c) 3

(d) 4

The question was asked in an online quiz.

I would like to ask this question from Solid-State Devices in chapter Introduction to Solid-State Devices of Electric Drives

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Right option is (d) 4

The explanation is: The relationship between β and ∝ is β=∝/(1-∝)=.8÷.2=4. The current gain is the ratio of the collector current and base current. The value of β is Ic÷IB.

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