A charge Q is uniformly distributed in a dielectric sphere of radius R (having dielectric constant unity). This dielectric sphere is enclosed by a concentric spherical shell of radius 2R and having uniformly distributed charge 2Q. Which of the following graph correctly represents variation of electric field with distance r from the common centre? A. B. C. D.

A charge Q is uniformly distributed in a dielectric sphere of radius R

1.	A charge Q is uniformly distributed in a dielectric sphere of radius R (having dielectric constant unity). This dielectric sphere is enclosed by a concentric spherical shell of radius 2R and having uniformly distributed charge 2Q. Which of the following graph correctly represents variation of electric field with distance r from the common centre? A. B. C. D.
Answer» Correct Answer - C Use Gauses theorem. Electric field inside uniformly distributed dielectric sphere `E=r` (For `0ltrleR`) Between the spheres `Eprop(Q)/(r^(2))` (For `Rltrle2R`) Outside the spheres `E=(3Q)/(r^(2))` (For `2Rltr`)

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