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If $β$ and $α$ are current gain in the $C E$ and $C B$ configurations respectively of the transistor then $\frac{α β}{β - α}$ is _______

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Correct option is B

Relation between β and α β=α1−α∴ β−αα β=α1−α−αα−α1−α ∴ β−αα β=1

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If β and α are current gain in the CE and CB configurations respectively of the transistor then α ββ−α is _______

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If $β$ and $α$ are current gain in the $C E$ and $C B$ configurations respectively of the transistor then $\frac{α β}{β - α}$ is _______