Physics - Current Electricity Question with Solution | TestHub

According to Kirchhoff's first law, At junction $\mathrm{A},i_{AB}=2+2=4\mathrm{A}$ At junction $\mathrm{B},i_{AB}=i_{BC}+1\Rightarrow {\mathrm{i}}_{BC}=4-1=$ $3\mathrm{A}$
At junction $\mathrm{C},i=i_{BC}-1.3=3-1.3=1.7\mathrm{A}$