The figure shows a plastic ring of radius R = 50.1 cm. Two small charged beads are on the ring: Bead 1 of charge +2.05 JC is fixed in place at the left side; bead 2 of charge +6.19 JC can be moved along the ring. The two beads produce a net electric field of magnitude E at the center of the ring. At what (a) positive and (b) negative value of angle 0 should bead 2 be positioned such that E = 2.07 x 105 N/C? Ring Bead 2 R Bead 1 (a) Number i Units (b) Number i Units