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Power Factor

Current gain ...

Question

Current gain of a transistor in common base mode is $0.95$ . Its value in common emitter mode is

A

0.95

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B

1.5

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C

19

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D

(19)^{- 1}

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Solution

The correct option is C $19$
$β = \frac{α}{1 - α} = \frac{0.95}{1 - 0.95} = \frac{0.95}{0.05} = 19$

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