Figure shows a set of equipotential surfaces. The magnitude and direction of electric field that exists in the region is .........
$10 \sqrt{2} \,V / m$ at $45^{\circ}$ with $x$-axis
$10 \sqrt{2} \,V / m$ at $-45^{\circ}$ with $x$-axis
$5 \sqrt{2} \,V / m$ at $45^{\circ}$ with $x$-axis
$5 \sqrt{2} \,V / m$ at $-45^{\circ}$ with $x$-axis
The angle between the electric lines of force and the equipotential surface is
Draw an equipotential surface for an uniform electric field.
Three infinitely long linear charges of charge density $\lambda $ , $\lambda $ and $-2\lambda $ are placed in space. A point in space is specified by its perpendicular distance $r_1 , r_2 $ and $ r_3$ respectively from the linear charges. For the points which are equipotential
Equipotential surfaces associated with an electric field which is increasing in magnitude along the $x$-direction are
Draw an equipotential surface of two identical positive charges for small distance.