Voltage Output of Op-Amp: Solving for Vo in a 10-kΩ Circuit

[gfd43tg]

Homework Statement

Determine vo across the 10-kΩ resistor in the circuit below.

Homework Equations

The Attempt at a Solution

For this problem, using the ideal op-amp model, I believe the currents are zero in both the positive and negative terminals of the op amp. Therefore, there is no voltage drop across neither the 2 kΩ resistor nor the 50 Ω resistor. I know the golden rule that you cannot do KCL at the output of an op-amp, and knowing the voltage at the negative and positive terminals is the same, I conclude that the output voltage is just 5V-1V = 4V. This seems weird, but its what my analysis produces. I am uncertain of my answer though.

 

[donpacino]

For an ideal op amp, your analysis is correct