InterviewSolution
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InterviewSolution
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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 figure. If magnitude of the electric fields at point P at a distance R from the centre of sphere 1,2 and 3 are `E_1, E_2 and E_3` respectively, then A. `E_(1) gt E_(2) E_(3)`B. `E_(3) gt E_(1) E_(2)`C. `E_(2) gt E_(1) E_(3)`D. `E_(3) gt E_(2) E_(1)` |
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Answer» Correct Answer - C `E_(1) = (1)/(4pi in_(0)) (Q)/(R^(2)) , E_(2) = (1)/(4pi in_(0)) (2Q)/(R^(2))` , `E_(3) = (1)/(4pi in_(0)) ((4Q) R)/(8 R^(3)) = (1)/(4pi in_(0)) (Q)/(2 R^(2))` Thus `E_(2) gt E_(1) gt E_(3)` |
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