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In the study of transistor as an amplifier, if
P \( \alpha=I_{c} / I_{e} \) and \( \beta=I_{c} / I_{b} \), where \( I_{c}, I_{b} \) and \( I_{e} \) are

W the collector, base and emitter currents, then
(1) \( \beta=\frac{1-\alpha}{\alpha} \)
(2) \( \beta=\frac{\alpha}{1-\alpha} \)
(3) \( \beta=\frac{\alpha}{1+\alpha} \)
(4) \( \beta=\frac{1+\alpha}{\alpha} \)
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