A Solid Nonconducting Sphere of Radius R Carries a Charge

A solid nonconducting sphere of radius R carries a charge Q distributed uniformly throughout its volume. At a certain distance r₁ (r₁ < R) from the center of the sphere, the electric field has magnitude E. If the same charge Q were distributed uniformly throughout a sphere of radius 2R, the magnitude of the electric field at the same distance r1 from the center would be equal to

A) E/8.
B) E/2.
C) 2E.
D) 8E.
E) E.

Correct Answer:

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