Norton Theorem


Norton Theorem             

Norton’s theorem states that a linear two-terminal circuit can be 

replaced by an equivalent circuit consisting of a current source IN in parallel with a resistor RN, where IN is the short-circuit current through the terminals and RN is the input or equivalent resistance at the terminals when the independent sources are turned off.

                                                              RN = RTh

find the Norton current we determine the short-circuit current flowing from terminal a to b and short circuit current equals to Norton current.

                                                Rth= Vsc/isc
                                                Vth = Vsc.


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