In uniform electric field $\vec E =3×10^3\hat i N/C$, a square loop of side 10 cm is placed such that plane of square loop is parallel to the yz plane. The flux linked with the square loop will be: |
$20 NC^{-1} m^2$ $30 NC^{-1} m^2$ $10 NC^{-1} m^2$ $10^{-2} NC^{-1} m^2$ |
$30 NC^{-1} m^2$ |
The correct answer is Option (2) → $30 NC^{-1} m^2$ The electric flux through a surface is - $\phi_E=\vec E.\vec A=EA\cos θ$ $=(3×10^3)(0.1)^2(\cos 0°)$ $=30 NC^{-1} m^2$ |