Consider the phasor representation shown below of a circuit at 200 Hz for the following two subprob- lems. Vs=620° v -j4 2 Vo (a) Find the phasor voltage Vo in the circuit shown, and the corresponding voltage waveform vo(t) that Vo represents. (b) Suppose that the source Vs in the circuit is replaced with a new voltage source vs(t) = 6 cos(800at), find the new phasor Vo and waveform vo(t).

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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).