4 A 4ix 302 2 ww 3 Practice Problem 3.2 292 ww Find the voltages at the three nonreference nodes in the circuit of Fig. 3.6. Answer: v₁ = 32 V, v₂ = -25.6 V, v3 = 62.4 V. リー 42 602 3.3 Nodal Analysts with Voltage Sources We now consider how voltage sources affect nodal analysis. We use the