URGENT!! Please help!! Circuit analysis (Thevenin voltage and internal resistance) Hi guys, I am really stuck on this portion of my lab and it's due tomorrow!! Please help! I have two questions: The first deals with the diagram from the left of the attached picture. I have to prove that RI (internal resistance of the meter movement) is equal to (RS)(RP)/(RS-RP). I tried reducing the circuit through circuit analysis (Rs = R1+R2+... and 1/Rp=(1/R1)+(1/R2)+...) but it doesn't work. Please give me some pointers, thank you. The second question is about the circuit on the right. I have to find the Thevenin voltage for this circuit. I know this is equal to the open circuit voltage which I measured to be 0.790V in the lab. I found the Thevenin resistance to be RTH=1,500 Ohms by circuit analysis. Please give me some ideas on how to solve for VTH, thank you!