A student is performing voltmeter measurements on the circuits of in order to extract the principal BJT parameters. (a) In the circuit at the left, the BJT operates in the FA mode. If it is found that...

A student is performing voltmeter measurements on the circuits of in order to extract the principal BJT parameters. (a) In the circuit at the left, the BJT operates in the FA mode. If it is found that VB 5 710 mV and VC 5 1.000 V, what are the values of Is and F? (For these calculations, assume VA 5 `.) (b) If changing R2 from 2.0 kV to 1.0 kV results in VC 5 2.950 V, fi nd the change in IC , and use it to indirectly fi nd VA. (c) Next, the student forces the BJT in the RA mode by interconnecting it in the circuit shown at the right. Since the role of collector is now played by the emitter region, the student has relabeled the emitter-terminal current as I 9 C , fl owing into the BJT. Then, R 5 I 9 C y I B. If it is found that VE 5 2.0 V, what is the experimental value of R?