Page 189 - Basic Electrical Engineering

Norton’s equivalent circuit is

Figure 2.98

or,

Thus, the current through the 16 Ω resistor calculated using Thevenin’s
theorem and Norton’s theorem is the same.

2.8.4 Millman’s Theorem

When a number of voltage sources form parallel branches, the common
voltage across their terminals can be found out by applying Millman’s

theorem. To understand the theorem let us consider a circuit having three
parallel branches as shown in Fig. 2.99 (a). By converting the voltage sources
into equivalent current sources, the circuit will be as shown in Fig. 2.99 (b)

and (c)
The voltage across terminals A and B, i.e., V AB can be calculated as