A Long Straight Conductor Has a Constant Current Flowing to the Right.A

question 881

Multiple Choice

A long straight conductor has a constant current flowing to the right.A wire rectangle is situated above the wire,and also has a constant current flowing through it (as shown in the figure) .Which of the following statements is true?

• A) The net magnetic force on the wire rectangle is upward, and there is also a net torque on it.
• B) The net magnetic force on the wire rectangle is zero, and the net torque on it is zero.
• C) The net magnetic force on the wire rectangle is downward, and there is also a net torque on it.
• D) The net magnetic force on the wire rectangle is zero, but there is a net torque on it.
• E) The net magnetic force on the wire rectangle is downward, and the net torque on it is zero.