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.
Answer: A
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