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                                                                                                                       Thevenin Theorem

                       Example 5


                       Calculate  the  current  that  goes  downward  through  2Ω  resistor  by  using

                       Thevenin’s theorem.
















                                  `
                                                          Figure 2.5(a)



                       Step 1

                       Remove the 2Ω resistor from the circuit and replace voltage source with a short circuit.

                       Find the value of Zth.

















                                                          Figure 2.5(b)







                                                                Zth  = (j3 – j5) Ω is parallel to (4 – j6) Ω


                                                                 = (j3 – j5) // (4 – j6)

                                                                   =  (j3 – j5)(4 – j6)
                                                                   (j3 – j5 + 4 – j6)

                                                                 = (0.2 – j1.6) Ω

                                  Figure 2.5(c)
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