Question

Two identical dielectric slabs, A and B, are placed symmetrically between the plates X and Y of a charged parallel-plate capacitor. The electric intensity has magnitudes E₁, E₂ and E₃ at the points 1, 2 and 3.

(a) E₁ > E₂ > E₃ 

(b) E₁ = E₃ < E₂ 

(c) E₁ = E₃ > E₂ 

(d) E₁ = E₂ = E₃

Answer 1

Correct Answer is: (d) E₁ = E₂ = E₃

Applying Gauss’s theorem to the points 1, 2, 3 gives the result E₁ = E₂ = E₃.