A Straight 10-Cm Wire Bent at Its Midpoint So as to Form

Multiple Choice

A straight 10-cm wire bent at its midpoint so as to form an angle of 90 $\degree$ carries a current of 10 A.It lies in the xy plane in a region where the magnetic field is in the positive z direction and has a constant magnitude of 3.0 mT.What is the magnitude of the magnetic force on this wire?

A) 3.2 mN
B) 2.1 mN
C) 5.3 mN
D) 4.2 mN
E) 6.0 mN