Download Example: -1 Using the Thevenin`s theorem, find the current i through

Example: -1 Using the Thevenin’s theorem, find the current i through R= 2Ω. Refer Fig.1.
Fig.1
PL
SOLUTION
Figure 2
Since we are interested in the current through the resistor is identified as circuit B and the
remainder as circuit A. After removing the circuit B, circuit A is as shown in Fig. 3.
Figure 3
To find Rt, we have to deactivate the independent voltage source. Accordingly, we get the
circuit in Fig. 4.
Fig. 4
Referring to Fig. 4,
Thus, we get the Thevenin’s equivalent circuit which is as shown in Fig.5.
Figure 5
Figure 6
Reconnecting the circuit B to the Thevenin’s equivalent circuit as shown in Fig. 6, we get
Example: -2 (a) Find the Thevenin’s equivalent circuit with respect to terminals a-b for the
circuit shown in Fig. 1 by finding the open-circuit voltage and the short–circuit current. (b)
Solve the Thevenin resistance by removing the independent sources. Compare your result
with the Thevenin resistance found in part (a).
Figure 1
SOLUTION
Figure 2