A Nichrome wire has the shape of two quarter-circles of radius a and b, connected by straight sections as shown in the figure below. The wire carries conventional current I in the direction shown. (Let the +x axis point towards the right, the +y axis point upward and the +z axis point into the page.) (a) Calculate the direction and magnitude of the magnetic field at point C, the center of the quarter-circles. (Use the following as necessary: μ0, Ir, a, and b.) magnitude |B→| = direction Briefly explain your work, including a diagram. (Submit a file with a maximum size of 10 MB.) This answer has not been graded yet. (b) At a particular instant, an electron is at point C, traveling to the right with speed v. Calculate the direction and magnitude of the magnetic force on the electron. (Use the following as necessary: μ0, I, e, v, a, and b.) magnitude |F→| = direction