Page 36 - NETWORK ANALYSIS
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                                                                                                                       Thevenin Theorem

                       Example 1

                       Solve the current flowing through the 4Ω resistor using Thevenin’s theorem.












                                                           Figure 2.1(a)


                       1) First, remove the 4Ω resistor and calculate the value of the Thevenin

                           resistance, Rth by replacing voltage source with a short circuit.














                                                           Figure 2.1(b)


                       Thevenin resistance, Rth is the resistance measured across points A and B looking back

                       into the circuit.









                                                              Rth  = 3 + [1 Ω parallel to 2 Ω]

                                                               = 3 + [1//2]

                                                                   = 3 + 0.67

                                                               = 3.667 Ω


                                 Figure 2.1(c)
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