Response to the following:
An npn BJT with grounded emitter is operated with VBE = 0.700 V, at which the collector current is 0.5 mA. A 5-kΩ resistor connects the collector to a +5-V supply.
What is the resulting collector voltage VC? Now, if a signal applied to the base raises vBE to 705 mV, find the resulting total collector current iC and total collector voltage vC using the exponential iC-vBE relationship.
For this situation, what are vbe and vc? Calculate the voltage gain vc/vbe. Compare with the value obtained using the small-signal approximation,that is, -gmRC.