Electric field in a region is given by $\overrightarrow{\mathrm{E}}=\mathrm{a} \hat{\mathrm{i}}+\mathrm{b}…
Electric field in a region is given by $\overrightarrow{\mathrm{E}}=\mathrm{a} \hat{\mathrm{i}}+\mathrm{b} \hat{\mathrm{j}}$, where $\mathrm{a}$ and $\mathrm{b}$ are constants. The net flux passing through a square area of side $l$ parallel to $y-z$ plane is