What will be the direction of torque , when a file is placed in a uniform electric field?

Dear Student,

File is senseless it should be dipole . the torque on dipole when kept in uniform electric field is 



$$\begin{gathered} torque =\stackrel{\rightharpoonup }{dq}\times \stackrel{\rightharpoonup }{E} \\ so for thr above diagram the direction of torque is inside the plane. \\ Regards \end{gathered}$$