What is the net flux of a uniform electric field $\vec{E} = 3 imes 10^3 \hat{i} ext{ N/C}$ throug

Question

What is the net flux of a uniform electric field $\vec{E} = 3 	imes 10^3 \hat{i}	ext{ N/C}$ through a cube of side $20	ext{ cm}$ oriented so that its faces are parallel to the coordinate planes?

Professor PC Thomas Classes · Answer

Since the electric field is uniform and the cube is a closed surface, the net flux through the entire closed surface is zero (Gauss's law, as there is no charge enclosed).