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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
$β = \frac{\propto}{1 - \propto} = \frac{0.95}{1 - 0.95} = \frac{0.95}{0.05}$ = 19

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