a pnp transistor is used as an amplifier in the common-base configuration. if the ratio of change in current in emitter and corresponding change in current in collector is 1.25, then the value of current gain is
a pnp transistor is used as an amplifier in the common-base configuration. if the ratio of change in current in emitter and corresponding change in current in collector is 1.25, then the value of current gain is