Example 5.1 | 5.6(a). Find the closed-loop gain vo/vs | FEC 4th Edition

A 741 op amp has an open-loop voltage gain of 20000, input resistance of 2 MOhms, and output resistance of 50 Ohms. The op amp is used in the circuit of Fig. 5.6(a). Find the closed-loop gain vo/vs. Determine current i when Vs 2 V.