A flat, rectangular coil, carrying current, is placed beside a long straight conductor carrying current. The two are coplanar. The net force and net torque experienced by the coil are F and $\mathrm{\tau }$.

Force on the edges parallel to the straight wire will be attractive if currents are parallel and repulsive if currents are antiparallel. Force on the edges perpendicular to the straight wire will be zero.

The side which is closer to the wire will experience larger force than the side which is away.

So, net force on the loop will be attractive. 

As, $\overrightarrow{\mathrm{\tau }}=\overrightarrow{\mathrm{M}}\times \overrightarrow{\mathrm{B}}$

Here, Dipole moment of the loop is parallel with the magnetic field due to the wire. So, the torque is zero.