Concentric spherical shells of radii 2 m, 4 m, and 8 m carry uniform surface charge densities of 20 nC/m 2 , −4 nC/m 2 and ρs, respectively. The value of ρ s (nC/m 2 ) required to ensure that the electric flux density D^{\to} = 0 at radius 10 m is _________

Correct Answer is : -0.28--0.22

GATE Electronics and Communications (EC) 2016 Shift 1 Solved Paper

Question : 34 of 65

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Concentric spherical shells of radii 2 m, 4 m, and 8 m carry uniform surface charge densities of 20 nC/m², −4 nC/m² and ρs, respectively. The value of ρ_s (nC/m²) required to ensure that the electric flux density

D↖{→} = 0

at radius 10 m is _________

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