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  4. For a transistor amplifier power gain and voltage glain are 7.5 and 2.5 respectively. The value of the current gain will be

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Q. For a transistor amplifier power gain and voltage glain are $7.5$ and $2.5$ respectively. The value of the current gain will be

Semiconductor Electronics: Materials Devices and Simple Circuits

Solution:

Power gain = Voltage gain $\times$ Current gain
Amplifier power gain $=7.5$
and voltage gain is $2.5$
Current gain $=\frac{7.5}{2.5}=3$