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Three charged cylindrical sheets are present in three spaces with σ = 5 at R = 2m, σ = -2 at R = 4m and σ = -3 at R = 5m. Find the flux density at R = 3m.(a) 3(b) 10/3(c) 11/3(d) 4I had been asked this question in class test.I need to ask this question from Applications of Gauss Law in chapter Electrostatic Fields of Electromagnetic Theory

Answer»

The correct answer is (B) 10/3

The EXPLANATION: The radius is 3m, hence it will enclose one Gaussian cylinder of R = 2m.

By Gauss law, ψ = Q

D(2πRL) = σ(2πRL), D(2π X 3) = σ(2π X 2), Thus D = 10/3 units.



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