Non-inverting op-amp amplifier with gain of 20 and 1kΩ load

[kayuaret]

Homework Statement

Design a non-inverting op-amp amplifier for a voltage gain of 20 and a load of 1k ohms. Determine the output voltage and output op-amp current if V input = 0.1 sin (omega*t) Volts.

Homework Equations

Voltage Gain = V output/V input
Voltage Gain = 1 + Rf/R

The Attempt at a Solution

 

[kayuaret]

v output = voltage gain * v input = 0.1 sin (omega*t) * 20 = 2 sin (omega*t) Volts
i load, which is the current through R load = V output/R load = 2 sin (omega*t) / 1 ohm

I also figured out from the 2nd voltage gain equation that, Rf = 19R