A charge of 5.5 nC is placed on a solid conducting sphere of radius 1.9 m. What is the electric field magnitude a distance of 0.3 m from the sphere's center? a) \( 2.5 × 10⁴ \, N/C \) b) \( 1.5 × 10⁴ \, N/C \) c) \( 2.0 × 10⁴ \, N/C \) d) \( 1.0 × 10⁴ \, N/C \)
