Problem 3 Faraday'sLaw . Consider an infinite wire carrying a constant current I and a rectangular wire loop of dimensions a and b, whose left side is a distance d from the wire, as shown in the figure. The wire has an effective resistance R. We denote by r the distance from the infinite wire to an arbitrary point P . R d---b-- (a) Calculate the magnitude of the magnetic field due to the current I at the point P , a distance r away from the wire. Indicate in the diagram the direction of B . Compute the flux