An uncharged metal sphere is placed between two charged plates as shown. The electric field lines look like:

$q_1, q_2, q_3$ and $q_4$ are point charges located at points as shown in the figure and $S$ is a spherical Gaussian surface of radius $R$. Which of the following is true according to Gauss's law?

$A$ charge $q$ is placed at the corner of a cube of side $a$. The electric flux through the cube is

If $\oint_s \vec{E} \cdot \overrightarrow{d S}=0$ over a surface,then:

If there is only one type of charge in the universe,then ($ \vec{E} $ = Electric field,$ \vec{d}s $ = Area vector):

The electric field in a region of space is given by $\overrightarrow E = E_0 \hat i + 2E_0 \hat j$,where $E_0 = 100 \, N/C$. The flux of the field through a circular surface of radius $0.02 \, m$ parallel to the $Y-Z$ plane is nearly: