An Imaginary Spherical Surface Has Radius 1 $\times$ 10^-7 C/m²

An imaginary spherical surface has radius 1.5 m.Fully contained within and concentric with the spherical surface is a spherical conductor with a uniform surface charge density of 1.5 $\times$ 10^-7 C/m².What is its radius if the flux through the imaginary surface is electric field 1.5 m from its center is 480 Nm²/C?

A) 3.2 cm
B) 4.7 cm
C) 9.5 cm
D) 6.4 cm
E) 3.9 cm

Correct Answer:

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