In this problem, you will use the node method to find the unknown node voltage v

Question

In this problem, you will use the node method to find the unknown node voltage va:
Notice it will be easier to use a combination of equivalent resistances to solve this circuit; but we want you to experiment with the node method.

First, express the KCL equation at node a in terms of the node voltage va --find the coefficient for (va) in the equation below; to make the equation unique, set the right-hand-side of your equation to vs/R1:

Equation 1 (KCL at node a):

Second, solve for the node voltage va.

Explanation / Answer

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