Find the Norton Equivalent Circuit Across a and B for the Circuit

question 7

Essay

Find the Norton equivalent circuit across a and b for the circuit shown in Figure 2.
(a) Short circuit $a$ and $b$ by connecting a wire between $a$ and $b$ . Write a node equation at node 1 by summing the currents leaving node 1 . Solve the equation to find voltage $V _ { 1 }$ .
(b) Find the short-circuit current between $a$ and $b$ , i.e., $\mathrm { I } _ { \mathrm { sc } } = \mathrm { I } _ { \mathrm { n } }$ .
(c) Deactivate the current source and find the Norton equivalent resistance $\mathrm { R } _ { \mathrm { n } }$ between $a$ and $b$ .

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