The potential at a point due to an electric dipole will be maximum and minimum when the angles between the axis of the dipole and the line joining the point to the dipole are respectively:

An electrical dipole coincides on the $z$-axis and its midpoint is at the origin of the coordinate system. The electric field at an axial point at a distance $z$ from the origin is $\vec{E}(z)$ and the electric field at an equatorial point at a distance $y$ from the origin is $\vec{E}(y)$. Here $z = y \gg a$,so $\left| \frac{\vec{E}(z)}{\vec{E}(y)} \right| = . . . . . . . .$.

Write the expression for the torque experienced by an electric dipole placed in a uniform electric field.

Four charges are placed at a distance $a$ from the origin as shown in the figure. The dipole moment of the configuration is:

$A$ system of three charges is placed as shown in the figure. If $D >> d$,the potential energy of the system is best given by:

When does the torque acting on an electric dipole in a uniform electric field become maximum?