A transistor is used as an amplifier in `CB` mode with a load resistance of `5 k Omega` the current gain of amplifier is `0.98` and the input resistance is `70 Omega`, the voltage gain and power gain respectively areA. `70,68.6`B. `80,75.6`C. `60,66.6`D. `90,96.6`

A transistor is used as an amplifier in `CB` mode with a load resistan

1.	A transistor is used as an amplifier in `CB` mode with a load resistance of `5 k Omega` the current gain of amplifier is `0.98` and the input resistance is `70 Omega`, the voltage gain and power gain respectively areA. `70,68.6`B. `80,75.6`C. `60,66.6`D. `90,96.6`
Answer» Correct Answer - A In common base mode `alpha=0.98, R=5 kOmega,R_(i n)=70 Omega` `:.` Voltage gain `A_(v)=alphaxxR/(R_(i n)) =0.98xx(5xx10^(3))/70=70` power gain =Current gain xVoltage gain `=0.98xx70=68.6`

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A transistor is used as an amplifier in `CB` mode with a load resistance of `5 k Omega` the current gain of amplifier is `0.98` and the input resistance is `70 Omega`, the voltage gain and power gain respectively areA. `70,68.6`B. `80,75.6`C. `60,66.6`D. `90,96.6`

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