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If in the junction of the figure $I_1=2\ \text{A}$, $I_2=3\ \text{A}$, $I_3=1\ \text{A}$, $I_4=4\ \text{A}$, and $I_5=1\ \text{A}$, what is $I_6$? ![](https://qallery.app/diagrams/v2_800ac4b5cc12/img-000.jpeg)

A$0\ \text{A}$
B$1\ \text{A}$
C$2\ \text{A}$
D$3\ \text{A}$
Answer & Solution
Correct answer: B. $1\ \text{A}$
Using KCL for the shown node, $I_1+I_2+I_3=I_4+I_5+I_6$. Substituting values: $2+3+1=4+1+I_6$, so $6=5+I_6$, giving $I_6=1\ \text{A}$.
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