The electric field in a region of space is given by $\vec{E} = 5\hat{i} + 2 \hat{j}N/C$. The flux of  due to this field through an area 2 m2 lying in the y-z plane, in SI units, is

10 20 $10\sqrt 2$ $2\sqrt 29$

10

$\phi = \vec{E}.\vec{S} = (5\hat{i} + 2 \hat{j}N/C).(2\hat{i}) = 10 Weber$