A point charge $+Q$ is placed just outside an imaginary hemispherical surface of radius $R$ as shown in the figure. Which of the following statements is/are correct?
(IMAGE)
$[A]$ The electric flux passing through the curved surface of the hemisphere is $-\frac{\mathrm{Q}}{2 \varepsilon_0}\left(1-\frac{1}{\sqrt{2}}\right)$
$[B]$ Total flux through the curved and the flat surfaces is $\frac{Q}{\varepsilon_0}$
$[C]$ The component of the electric field normal to the flat surface is constant over the surface
$[D]$ The circumference of the flat surface is an equipotential
$A,C$
$A,B$
$A,C,D$
$A,D$
Figure shows a set of equipotential surfaces. The magnitude and direction of electric field that exists in the region is .........
Two conducting hollow sphere of radius $R$ and $3R$ are found to have $Q$ charge on outer surface when both are connected with a long wire and $q'$ charge is kept at the centre of bigger sphere. Then which one is true
The diagrams below show regions of equipotentials.A positive charge is moved from $A$ to $B$ in each diagram.
Electric field is always ...... to the equipotential surface at every point. (Fill in the gap)
Draw an equipotential surface of two identical positive charges for small distance.