8. The πΌπΆ β ππΆπΈ characteristics of a 2N3904 BJT was measured at room temperature. The collector current was 1.292 ππ΄ @ ππΆπΈ = 4 π and 1.2964 ππ΄ @ ππΆπΈ = 5 π. What is the output resistance ππ of the transistor under these conditions?