In a region of space the electric field is given by $\vec E = 8\hat i + 4\hat j+ 3\hat k$. The electric flux through a surface of area $100\, units$ in the $x-y$ plane is….$units$

Five charges $+q,+5 q,-2 q,+3 q$ and $-4 q$ are situated as shown in the figure.

The electric flux due to this configuration through the surface $S$ is

A charge $Q$ is fixed at a distance $d$ in front of an infinite metal plate. The lines of force are represented by

Draw electric field by negative charge.

The wrong statement about electric lines of force is