In case of volume charge distribution of charge of radius 4m having a charge of 20úc. Find the ratio of electric field intensity at a distance of 3m and 4m from its centre.
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Charge on Sphere formula
coulombs per square meter; where the area is perpendicular to the lines of flux. (One coulomb is equal to the magnitude of charge of 6.25 X 1018 electrons.) The charge enclosed in the sphere is then equal to the electric flux density on its surface times the area enclosing the charge. q (coulombs enclosed) = D x 4 r2.
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