Q.If an electric dipole of moment p be placed along a uniform electric field of intensity E, the torque acting on the dipole is

Torque on a dipole τ = pE sinθ is maximum when sinθ = 1, i.e. θ = 90°.

Torque on an electric dipole in a uniform field: $\tau = pE\sin\theta$, where $\theta$ is the angle between the dipole moment $\vec p$ and the field $\vec E$. This is maxi …

The torque on an electric dipole in a uniform field is the vector (cross) product of its dipole moment and the field.

A dipole of moment p, placed in a uniform electric field E, experiences equal and opposite forces on its two charges, forming a couple. The torque of this couple i …