Ucc= 16v
Source impedance (Rs) = 25 ohms
Amplification factor (B) = 100
R base <- emitter = 25 ohms
Verify amplification condition > 20

I think it is a radio amplification problem
I know only formullas for tension amplification

 

Amplification factor (B) = 100
Verify amplification condition > 20

Ummm... Seems like it's given.

 

I'm guessing that they are looking for the effects of input loading due to the finite source impedance and the input resistance. But I don't know exactly what they mean by the notation "R base <- emitter".

But a more fundamental problem is that the TS is apparently guess what the basic kind of problem is and then only bringing a bunch of formulas to the table.

 

"R base <- emitter".

- means resistance seen towards the base