Page 202 - Basic Electrical Engineering

We will apply the procedure for determining Thevenin’s equivalent network.
Open-circuit voltage across terminals A and B is first calculated by removing
R as
L

Figure 2.116

Since all the three 6 Ω resistors are in parallel, the above circuit gets reduced

to

Figure 2.117

Voltage across AB, i.e., V OC = IR = 2 × 2 = 4 V

Equivalent resistance R is calculated as,
Th