Let $V$ and $E$ are potential and electric field intensity at a point then
if $V = 0$ then $E$ must be zero
if $V \ne 0$ then $E$ can not be zero
if $E \ne 0$ then $V$ can not be zero
if $V = 0$ then $E$ may be zero
Ten electrons are equally spaced and fixed around a circle of radius $R$. Relative to $V = 0$ at infinity, the electrostatic potential $V$ and the electric field $E$ at the centre $C$ are
A charge $Q$ is distributed over three concentric spherical shell of radii $a, b, c (a < b < c)$ such that their surface charge densities are equal to one another. The total potential at a point at distance $r$ from their common centre, where $r < a$, would be
Two insulated charged conducting spheres of radii $20\,cm$ and $15\,cm$ respectively and having an equal charge of $10\,C$ are connected by a copper wire and then they are separated. Then
Draw a graph showing variation of potential with $r$ distance for a uniformly charged spherical shell.
A solid sphere of radius $R$ is charged uniformly. At what distance from its surface is the electrostatic potential half of the potential at the centre?