Figure shows a square loop  $10cm$ on each side in the x-y plane with its centre at the origin. An infinite wire is at  $z=12cm$ above y-axis. 

 

 

 

 

 

 

What is torque on loop due to magnetic force? If torque is expressed as  $x\times {10}^{-7}N-m,$ fill value of  $x.$