A square wire loop 10.0 cm on each side carries a clockwise current of 15.0 A. Find

Question

the magnitude and direction of the magnetic field B at its center due to the four 1.20
mm wire segments at the midpoint of each side?

Answer 1

The magnitude of the magnetic field B at the center of the loop is 0.039 T. The direction of the magnetic field is out of the plane of the loop.