The electric field in a region is given $\vec E = a\hat i + b\hat j$ . Here $a$ and $b$ are constants. Find the net flux passing through a square area of side $l$ parallel to $y-z$ plane

  • A

    $al^2$

  • B

    $bl^2$

  • C

    Zero

  • D

    $(a + b)\,l^2$

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