Question

1. Determine the values of node voltages, V, and v2, in the circuit shown in Figure 1.
(7 marks)
ΒΟΩ
75 Ω
65 Ω
50Ω
100 mA
60V​

Answer 1

Explanation:

Nodal analysis is a technique that can be applied to virtually any circuit. In general use, it might be considered a universal solution technique as there are no practical circuit configurations that it cannot handle. Nodal analysis relies on the application of Kirchhoff's current law to create a series of node equations that can be solved for node voltages. These equations are based on Ohm's law and will be of the form I=V/R, or more generally, I=(1/RX)⋅VA+(1/RY)⋅VB… Once the node voltages are obtained, finding any branch currents or component powers becomes an almost trivial exercise. We will examine two variations; a general version that can be used with both voltage and current sources, and a second somewhat quicker version that can be used with circuits only driven by current sources.