Study the circuit. The equation for node A is not complete. Explain how to find the missing expression (the box) and determine the appropriate expression to fill in the rectangle shown. The expression must be in terms of node voltage(s) and source voltage(s). R1 A R2 E2 В E3 1ka 2kn 20V 30V E1 R3 3kn R4 4kQ R5 5k2 -10V A -In- IAz Ie=0 Ri - Va -Ei VA Ry Rz

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Nodal Analysis

In the analysis of any electric circuit, nodal analysis is the method of determining the potential difference or voltage between different nodes in an electric circuit. A node is a point where two or more branches connect each other. In the nodal analysis, the voltages are determined in the terms of branch currents. The nodal analysis is also known as the node voltage method or branch current method. The nodal analysis method is one of the several applications of Kirchhoff's Current Law (KCL).