A long straight wire has a constant current flowing to the right. A rectangular metal loop is ...

A long straight wire has a constant current flowing to the right. A rectangular metal loop is situated above the wire, and also has a constant current flowing through it, as shown in the figure. Which one of the following statements is true?
 


• The net magnetic force on the rectangle is downward, and the net torque on it is zero.

• The net magnetic force on the rectangle is zero, and the net torque on it is zero.

• The net magnetic force on the rectangle is zero, but there is a nonzero torque on the rectangle.

• The net magnetic force on the rectangle is upward, and there is also a nonzero torque on the rectangle.

• The net magnetic force on the rectangle is downward, and there is also a nonzero torque on the rectangle.