Please Can anyone solve this electronic circuits exercises about AC and AC analysis. thank you

 

There's a huge difference between "helping you solve an exercise" and "solving an exercise for you". The former involves some effort on your part, which is thus far completely absent.

You need to show YOUR best attempt to solve YOUR homework.

 

There's a huge difference between "helping you solve an exercise" and "solving an exercise for you". The former involves some effort on your part, which is thus far completely absent.

You need to show YOUR best attempt to solve YOUR homework.

I will i will appreciate if you solve this exercise Because I dont know how to do it

 

What is ro? Or r0?

 

What is ro? Or r0?

Small signal output resistance
https://en.wikipedia.org/wiki/Hybrid-pi_model#BJT_parameters

 

I will i will appreciate if you solve this exercise Because I dont know how to do it

Then you don't need someone to solve it for you, you need to retake the course(s) where you were supposed to have learned this.

 

What is ro? Or r0?

Its r0