A straight wire carries a 10.0-A current (Fig. E28.9). ABCD is a rectangle with point D...

A straight wire carries a 10.0-A current (Fig. E28.9). ABCD is a rectangle with point D in the middle of a 1.10-mm segment of the wire and point C in the wire. Find the magnitude and direction of the magnetic field due to this segment at (a) point A; (b) point B; (c) point C.