Three resistors R1=10Ω, R2=20Ω, and R3=50Ω are connected in series across a 120V dc source. Calculate: The total resistance The total current drawn by the circuit The voltage across R3 The power dissipated in R3 The total power delivered by the source

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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).