The switch in Fig. 1(c) was open before time t = 0; it is closed at time t = 0 and remains closed thereafter. The voltage eз at node 3 is 1 V at time t = 0. Calculate the voltage eз at time t = 500 μs. V1 (1000+) mV, R2 = (2000 + n) 2, R3 = (3000 + 0) Q, C4 = (400 + X) NE 1 SW 2 W2 R2 3 V1 R3 C4 VSW Figure 1(c) Node voltage eз at time t = 500 μs (Ctrl)