Disclaimer i am sure this is super simple, but i am a complete novice to electronics.
I am trying to create thevenins equivalent circuit. For VTH i have been calculating IOC which I believe to be, 12(27/77) = 4.2v
However I am debating whether I should be including the 1 ohm resistor in my calculation.
Next for RTH I have shorted the source and opened the load, to calculate RTH I have thus done 1 + (50 * 27/50 + 27) = 18.53ohms
To clarify, VTH = 4.2v and RTH = 18.53ohms
Nortons. What I have been doing to calculate I nortons is to divide the source voltage by any of the resistors on the route to the short circuit in this case just the 50 ohm.
IN = ISC = 12/50 = 0.24A
Now here is my problem, I have read that VTH = IN * RN so 4.2 = 0.24 * 18.53 which of course isn't correct, 0.24 * 18.53 = 4.4472
I am failing to see where I have gone wrong!