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  4. In a transistor in C E configuration, the ratio of power gain to voltage gain is

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Q. In a transistor in $C E$ configuration, the ratio of power gain to voltage gain is

Semiconductor Electronics: Materials Devices and Simple Circuits

Solution:

For $C E$ configuration voltage gain $=\beta \times R_{L} / R_{i}$
Power gain $=\beta^{2} \times R_{L} / R_{i}$
$\Rightarrow \frac{\text { Power gain }}{\text { Voltage gain }}=\beta$