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Charges Q, 2Q and 4Q are uniformly distributed in three dielectric solid spheres 1, 2 and 3 of radii R/2, R and 2R respectively, as shown in the figure. If magnitudes of the electric fields at point P at a distance R from the centre of spheres 1, 2 and 3 are E 1 , E 2 and E 3 respectively, then

Options

  1. AE 1 > E 2 > E 3
  2. BE 3 > E 1 > E 2
  3. CE 2 > E 1 > E 3
  4. DE 3 > E 2 > E 1

Correct answer

C. E 2 > E 1 > E 3

Step-by-step solution

For point outside dielectric sphere E = Q 4 π ε 0 r 2 For point inside dielectric sphere E = E s r R Exact Ratio E 1 : E 2 : E 3 = 2 : 4 : 1

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