6.43 For a particular npn transistor operating at a vBE of 680 mV and IC = 0.5 mA, the iC–vCE characteristic has a slope of 0.5 × 10−5 Ʊ. To what value of output resistance does this correspond? What is the value of the Early voltage for this transistor? For operation at 5 mA, what would the output resistance become?
200 kΩ; 100 V; 20 kΩ