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Electronics — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsElectronics1 Mark
Question
Assertion : The current gain in common base circuit is always less than one.
Reason : At constant collector voltage the change in collector current is more than the change in emitter current.
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Answer

(c) The current gain in common base circuit $\alpha=\left(\frac{\Delta I_C}{\Delta I_E}\right)_{V_C}$The change in collector current is always less than the change in emitter current.$\Delta I_C<\Delta I_E$. Therefore, $\alpha<1$.

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