An electric current is passed through a circuit containing two wires of the same material, connected in parallel. If the lengths and radii of wires having resistances ${\mathrm{R}}_1$ and ${\mathrm{R}}_2$ are in the ratio of 4:3 and 2 : 3 then the ratio of the currents ${\mathrm{I}}_1:{\mathrm{I}}_2$ passing through the wires will be