Electric Dipole — Prelims Questions

Two point charges, $+10,\text{nC}$ and $-10,\text{nC}$, are placed $6,\text{mm}$ apart. Calculate the magnitude of the electric dipole moment.

An electric dipole has a dipole moment $vec{p} = (2 \times 10^{-9},\text{C}cdot\text{m}),hat{i}$. Calculate the electric field at a point on the axial line at a distance of $1,\text{m}$ from the center of the dipole. (Take $rac{1}{4piepsilon_0} = 9 \times 10^9,\text{N}cdot\text{m}^2/\text{C}^2$)

An electric dipole with dipole moment $vec{p}$ is placed in a uniform electric field $vec{E}$. At what angle $heta$ between $vec{p}$ and $vec{E}$ will the torque on the dipole be maximum?

An electric dipole of moment $vec{p}$ is placed in a uniform electric field $vec{E}$. The work done in rotating the dipole from an angle of $0^circ$ to $90^circ$ with respect to the field is:

At a point on the equatorial line of an electric dipole, the electric potential is:

An electric dipole is placed in a non-uniform electric field. Which of the following statements is true?