E E dE1: P (0.0.) R ck 2. A ring of charge of radius b is caracterized by a uniform line charge density of positive polarity p₁. The ring resides in free space and is positioned in the x-y plane as shown in the figure at the right side. Determine the electric field intensity E and the electric potential V at a point P=(0,0,h) along the axis of the ring at a distance h from its center. (a) dE-E + dE E: dE; dE2 JE R2 R