Find the open circuit voltage V0, short circuit current ISC, and RTH,
The Attempt at a Solution
I found the equivalent resistance to be 20 ohms(just by combining resistors in parallel and series) and V0 to be 30V, which I think might be wrong.
I did a nodal analysis at VA :
(VA-30)/10 + (VA)/15 +(VA)/30 =0
Then I found RTH =30v/0.33A=90 ohms
Shouldn't my RTH = Req?
I'm not really sure what I did wrong.