The flux of the electric field $\vec E=2×10^3\hat i N/C$ through a square of 10 cm, on a side whose plane is parallel to the xy plane is:
Answer & explanation
Correct answer: option 4
The correct answer is Option (1) → $20 Nm^2/C$
The electric flux through the square is -
$\phi_E=\vec E.\vec A\cos(θ)$
$\phi_E=2×10^3×0.01×\cos 90°$
$=0 Nm^2/C$