$I=\frac{\Delta q}{\Delta t}\xrightarrow{\Delta {{t}_{1}}=\Delta {{t}_{2}}}\frac{\Delta {{q}_{1}}}{\Delta {{q}_{2}}}=\frac{{{I}_{1}}}{{{I}_{2}}}$ $\Rightarrow \frac{\Delta {{q}_{1}}}{\Delta {{q}_{2}}}=\frac{200}{1\times {{10}^{-3}}}=2\times {{10}^{5}}$