Write an expression (derivation not required) for intensity of electric field in:

Broadside position of an electric dipole, in terms of its length$\left(2l\right)$ , dipole moment $\left(p\right)$ and distance $\left(r\right)$.

An electric dipole is held at an angle $\theta$ in a uniform external electric field $\overrightarrow{\mathrm{E}}$. Will there be any net translatory force.

An electric dipole is held at an angle $\theta$ in a uniform external electric field $\overrightarrow{\mathrm{E}}$. Will there be any

torque acting on it? Explain what happens to the dipole on being released.

An electric dipole is free to move in a uniform electric field. Explain its motion when it is placed parallel to the field.

An electric dipole is free to move in a uniform electric field. Explain its motion when it is placed perpendicular to the field.

An electric dipole is kept parallel, then what will be the motion of dipole ?

An electric dipole is kept  perpendicular to a ‘non-uniform’ electric field. What will be the motion of the dipole?

Sketch the electric lines of force due to point-charges: q < 0