The potential at a point, due to a positive charge of $100\,\mu C$ at a distance of $9\,m$, is

Draw a graph showing variation of potential with $r$ distance for a uniformly charged spherical shell.

Two equal positive point charges are kept at points $A$ and $B$ . The electric potential, while moving from $A$ to $B$ along straight line

In the following figure two parallel metallic plates are maintained at different potential. If an electron is released midway between the plates, it will move

Figure shows a solid hemisphere with a charge of $5\ nC$ distributed uniformly through its volume. The hemisphere lies on a plane and point $P$ is located on this plane, along a radial line from the centre of curvature at distance $15\ cm$. The electric potential at point $P$ due to the hemisphere, is .....$V$

Four point charges $-Q, -q, 2q$ and $2Q$ are placed, one at each comer of the square. The relation between $Q$ and $q$ for which the potential at the centre of the square is zero is