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) \( 1.0 × 10⁴ \, N/C \)
