Kirchhoff's Junction Rule Practice Test

Solve for the unknown current at junction B using Kirchhoff’s Junction Rule: find $I_1$ entering B if $I_2=0.4,\text{A}$ and $I_3=1.3,\text{A}$ leave.

Calculate the currents at junction A and verify charge conservation: find $I_3$ leaving A if $I_1=1.8,\text{A}$ enters and $I_2=0.5,\text{A}$ leaves.