In the figure 29-71, a long circular pipe with outside radiusR = 1.87 cm carries a (uniformly distributed) currenti = 10.3 mA into the page. A wire runs parallel to thepipe at a distance of 3.00R from center to center. Find the magnitude of the current in the wire in milliamperes such that the ratio of the magnitude of the net magnetic field at pointP to the magnitude of the net magnetic field at the center of the pipe is 2.41, but it has the opposite direction.