- #1

sojo

- 4

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## Homework Statement

The attached picture is the circuit I have been given and I am asked to find Vo (the voltage drop across the 6k resistor.

## Homework Equations

v_out/v_in = (R_1 + R_2)/R_1

V+ = V-

## The Attempt at a Solution

So I know that the voltage drop across the 6k resistor is just the output voltage of the op-amp since there is a ground there.

I used the v_out/v_in = 3+9/3 = 4, so I know V_out = 4V_in

The thing I am having issues with is finding the V_in. I feel like I have 7 unknown currents and I've written out a ton of equations using the KVL and KCL but I feel like I just keep running around in circles with all the unknowns.

Am I going to have to use all the KVL KCL equations to solve this, or is there some simpler method I am missing to find the Vin so I can find the Vout?