- #1

- 157

- 1

## Homework Statement

## Homework Equations

## The Attempt at a Solution

I am trying to compute ##I_N##.

I connected nodes a and b. The circuit after some simplification:

$$\frac { 180-{ V }_{ 1 } }{ 20 } =\frac { 120-V_{ 1 } }{ 40 } \\ { V }_{ 1 }=240\quad V\\ \\ R=\frac { V }{ I } \\ 40=\frac { 120 }{ I_{ N } } \\ I_{ N }=3\quad A$$

The correct answer is 1A.

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