Electric lines of force about negative point charge are

Sketch the electric field lines for a uniformly charged hollow cylinder shown in figure.

The flat base of a hemisphere of radius $a$ with no charge inside it lies in a horizontal plane. A uniform electric field $\vec E$ is applied at an angle $\frac {\pi }{4}$ with the vertical direction. The electric flux through the curved surface of the hemisphere is

Shown below is a distribution of charges. The flux of electric field due to these charges through the surface $S$ is

Figure shows electric field lines due to a charge configuration, from this we conclude that

A square surface of side $L$ meter in the plane of the paper is placed in a uniform electric field $E(volt/m)$ acting along the same plane at an angle $\theta$ with the horizontal side of the square as shown in figure.The electric flux linked to the surface, in units of $volt \;m $