First slide
Transistor
Question

A common emitter amplifier circuit is shown in the figure below. For the transistor used in the circuit the current amplification factor, βdc=100. Other parameters are mentioned in the figure.

We find that :

Difficult
Solution

βdc  =  100,              βdc=iCiB     iB=ic100   (1)

VCC=  +iCRL  +VBC  +  VBE       (2)iBRB  +  VBC  +  iCRL=0        (3)Solving we get   VBE=+20.7V,     VBC=3.75V

NOTE: According to the question none of the options are matching. 4 th option is nearest.

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