Question

QUestion about thevenin circuits

Answer 1

RT = R1|| R2
VT = Vi RT/R1
Vo = VT RL/{RT+RL}
Vo = = VT for RL>>RT
QED

Answer 2

The equation for VT should be Vi X (R2/(R1 + R2)) The voltage divider rule, not the parallel equivalent of R1 and R2.

Answer 3

RT/R1 = R2/(R1+R2)
This easier to write, and allows for easier analysis.

Answer 4

So it is. I didn't check that out lol. Sorry to throw in the "voltage divider" equation.