A) \[\beta =\frac{\alpha }{1+\alpha }\]
B) \[\beta =\frac{\alpha }{1-\alpha }\]
C) \[\alpha =\frac{\beta }{1+\beta }\]
D) \[\alpha =\frac{1+\beta }{\beta }\]
Correct Answer: C
Solution :
We know that current gain\[(\beta )=\frac{\alpha }{1-\alpha }\]or \[\beta -\beta \alpha =\alpha \] or \[\beta =\alpha +\beta \alpha =\alpha (1+\beta )\] or \[\alpha =\frac{\beta }{1+\beta }.\]
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