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P-N Junction

The current g...

Question

The current gain of a transistor in common base mode is $0.995$ . The current gain of the same transistor in common emitter mode is

A

197

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B

201

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C

198

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D

199

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Solution

The correct option is D $199$
Current gain in common emitter mode
$= \frac{α}{1 - α} = \frac{0.995}{1 - 0.995} = \frac{0.995}{0.005} = 199$

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