Two long straight wires are perpendicular to the page and carry currents of equal magnitudes and opposite directions, as shown in the sketch. What is the direction of the total magnetic field produced by the wires at point P, which is midway between the two wires, or is the net field zero at this point?
net field is zero
into the page
out of the page
to the left
to the right
toward the top of the page
toward the bottom of the page