Answer:
The net force on a current carrying loop is equal to zero. This is because the the loop experiences equal but opposite forces on the opposite sides of the loop due to the magnetic field created by the current flowing through the wire. On adding the forces acting algebraically. The sum up to zero. The second wire on the other hand has a net force acting on it equal in magnitude to ILBSin(theta).
So the wire experiences a net force compared to the loop that experiences no net force since all forces cancel out.
Explanation:
