A current I1 flows from infinity to a point charge at the origin through a thin wire along the negative y-axis and a current I2 flows from the point charge to infinity through another thin wire along the positive y-axis. From considerations of uniqueness of AC H dl, find the displacement current emanating from (a) a spherical surface of radius 1 m and having its center at the point (2, 2, 2) and (b) a spherical surface of radius 1 m and having its center at the origin.