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(C) According to Kirchhoff's current law $(KCL)$,the sum of currents entering a junction must equal the sum of currents leaving the junction.Let the f

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$23$

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(C) According to Kirchhoff's current law $(KCL)$,the sum of currents entering a junction must equal the sum of currents leaving the junction.Let the four corners of the square be $A$ (top-left),$B$ (top-right),$C$ (bottom-right),and $D$ (bottom-left).$1$. At node $A$ (top-left): Incoming current is $15 \ A$. Outgoing currents are $8 \ A$ (downward) and $x$ (to the right). So,$15 = 8 + x \implies x = 7 \ A$.$2$. At node $B$ (top-right): Incoming currents are $3 \ A$ and $x = 7 \ A$. Outgoing current is $y$ (downward). So,$y = 3 + 7 = 10 \ A$.$3$. At node $D$ (bottom-left): Incoming currents are $5 \ A$ and $8 \ A$ (upward). Outgoing current is $z$ (to the right). So,$z = 5 + 8 = 13 \ A$.$4$. At node $C$ (bottom-right): Incoming currents are $y = 10 \ A$ and $z = 13 \ A$. Outgoing current is $i$. So,$i = 10 + 13 = 23 \ A$.

The figure shows a network of currents. The magnitude of currents is shown in the diagram. The current $i$ will be ................. $A$.

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