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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 = 1m.(a) 0(b) 1(c) 2(d) 3I had been asked this question in an international level competition.My question is taken from Applications of Gauss Law topic in division Electrostatic Fields of Electromagnetic Theory

Answer» CORRECT choice is (a) 0

For explanation: Since 1m does not enclose any cylinder (THREE GAUSSIAN surfaces of RADIUS 2m, 4m, 5m exists), the charge density and charge becomes zero according to Gauss LAW. Thus flux density is also zero.


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