An electric dipole of dipole moment ` oversetto P ` is placed in a uniform electric field ` oversetto E.` Obtain the expression for the torque `oversetto tau ` experienced by the dipole. Identify two pairs of perpendicular vectors in the expression.

Explanation

The torque acting on the dipole `oversetto tau =oversetto p xx oversetto E`. For its derivation ,see Answer to Short Answer Questions
Obviously , (a) ` oversetto tau and oversetto p ,` as well as (b) ` oversetto tau and ovarsetto E ` are mutually perpendicular.