In the figure below, imagine an ammeter inserted into a line containing R_3. a) What will you read assuming V = 550 V, R_1 = 2.0 Ohm, R_2 = 4.0 Ohm and R3 = 6.0 Ohm? b) The ammeter and the source of electromotive force are now physically interchanged. Show that the ammeter reading does not change. Suppose your resistance is zero R_1 R_2 R_3

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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).