A corrent amplifier for which Ri=1K歐姆,Ro=10k歐姆 and Ais=100 A/A is to be connected between a 100-mv source with a resistance of 100k歐姆 and a load of 1k歐姆 . what are the values of current gain io/ii ,of votage gain Vo/Vs ,and of power gain expressed directly and in dB?