Physics

Problem

At node

N

, currents of

4.0\,\text{A}

and

1.5\,\text{A}

flow into the node, while a current of

2.2\,\text{A}

flows out of it along another branch. Calculate the magnitude of the fourth branch current

I

leaving the node. a)

7.7\,\text{A}

3.3\,\text{A}

-3.3\,\text{A}

1.8\,\text{A}