This is a mathematically easy, but nontrivial conceptual problem. L Hint: Use the superposition principle forB Consider an infinite, quari filiform colindric conductor with radius a. a stationary current I flower along the longitudinal axis of the conductor. the current which is directed upward, is uniformly distributed through the conductor cross- section. Or shown in Lig HA5.9, a calinarical cavity with radius a/2 is open longitudinally, throughout the entire lenght of the conductor. the cavity is off axis such that it's center in the mid point of a radius of the original conductor. after opening the longitudinal cavity, the initial current density asociated with I is maintained constant. Calculate magnitude (including sign ) and direction of the magnetostatic field $ at point (center of theconductor ), at point C ( center of the cavity) 141/ and at point P Cat distance d from 0), BCO) 13 [10 points 1, BCC) [10 points.1, and B CP) [ 10 points] C P a a d Figure HA 5.9