Figure 22-38shows a plastic ring of radius R = 50.1 cm. Two small charged beads are on the ring: Bead 1 of charge +2.12 μC is fixed in place at the left side; bead 2 of charge+6.10 μC 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) negativevalue of angle θ should bead 2 be positioned such that E = 2.03 × 105 N/C?
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