Describe schematically the equipotential surfaces corresponding to
$(a)$ a constant electric field in the $z-$direction,
$(b)$ a field that uniformly increases in magnitude but remains in a constant (say, $z$) direction,
$(c)$ a single positive charge at the origin, and
$(d)$ a uniform grid consisting of long equally spaced parallel charged wires in a plane
$(a)$ Equidistant planes parallel to the $x -y$ plane are the equipotential surfaces.
$(b)$ Planes parallel to the $x -y$ plane are the equipotential surfaces with the exception that when the planes get closer, the field increases.
$(c)$ Concentric spheres centered at the origin are equipotential surfaces.
$(d)$ A periodically varying shape near the given grid is the equipotential surface. This shape gradually reaches the shape of planes parallel to the grid at a larger distance.
Three equal charges are placed at the corners of an equilateral triangle. Which of the graphs below correctly depicts the equally-spaced equipotential surfaces in the plane of the triangle? (All graphs have the same scale.)
The diagrams below show regions of equipotentials.A positive charge is moved from $A$ to $B$ in each diagram.
$S_1$ and $S_2$ are two equipotential surfaces on which the potentials are not equal. Which of the statement is incorrect ?
Thepoints resembling equal potentials are
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