A uniformly charged sphere carries a total charge of `2 pi xx10^(-12)` C. Its radius is 5 cm and is placed in vacuum. Determine its surface charge density.

A spherical drop of water carries a charge of 10xx10^(-12) C and his a potential of 100V at its surface. Radius of the drop will be

A charged of 8xx10^(-6)C is given to a metallic sphere of radius 5 cm placed in a medium of dielectric constant 5. The surface charge density of sphere is

A spherical drop of water carries a charge of 10xx10^(-12)C and has a potential of 100V at its surface. What is the radius of the drop ?

A uniformly charged conducting sphere is having radius 1 m and surface charge density 20" Cm"^(-2) . The total flux leaving the Gaussian surface enclosing the sphere is

A uniformly charged conducting sphere is having radius 1 m and surface charge density 20" Cm"^(-2) . The total flux leaving the Gaussian surface enclosing the sphere is

A conducting sphere of radius 10 cm is given a charge of +2xx10^(-8)C . What will be its potential?

(a) Using Gauss's law, derive an expression for the electric field intensity at any point outside a uniformly charged thin spherical shell of radius R and charge density sigma C//m^(2) . Draw the field lines when the charge density of the sphere is (i) positive, (ii) negative. (b) A uniformly charged conducting sphere of 2.5 m in diameter has a surface charge density of 100 mu C//m^(2) . Calculate the (i) charge on the sphere (ii) total electric flux passing through the sphere.

(a) Using Gauss's law, derive an expression for the electric field intensity at any point outside a uniformly charged thin spherical shell of radius R and charge density sigma C//m^(2) . Draw the field lines when the charge density of the sphere is (i) positive, (ii) negative. (b) A uniformly charged conducting sphere of 2.5 m in diameter has a surface charge density of 100 mu C//m^(2) . Calculate the (i) charge on the sphere (ii) total electric flux passing through the sphere.

A spherical charged conductor has sigma as the surface charge density. The electricfield on its surface is E. The radius of the sphere is doubled keeping the surface charge density unchanged. Then the electric field on the surface of the new sphere is,