Two parallel wires in the plane of the paper are distance X₀ apart. A point charge is moving with speed u between the wires in the same plane at a distance X₁ from one of the wires. When the wires carry current of magnitude I in the same direction, the radius of curvature of the path of the point charge is R₁. In contrast, if the currents I in the two wires have directions opposite to each other, the radius of curvature of the path is R₂. $\mathrm{ }\text{If }\frac{{\mathrm{x}}_0}{{\mathrm{x}}_1}=\text{ 3},$ the value of $\frac{{\mathrm{R}}_1}{{\mathrm{R}}_2}$ is