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  4. For a common base circuit if (IC/IE)=0.98 then current gain for common emitter circuit will be

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Q. For a common base circuit if $\frac{I_C}{I_E}=0.98$ then current gain for common emitter circuit will be

AIPMTAIPMT 2001Semiconductor Electronics: Materials Devices and Simple Circuits

Solution:

$\frac{I_C}{I_E}=\alpha=0.98, \frac{I_C}{I_B}=\beta=\frac{\alpha}{1-\alpha}=49$