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 sph
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. `2.547xx10^(-4)C//m^(2)`
B. `5.248xx10^(-4)C//m^(2)`
C. `25.48xx10^(-4)C//m^(2)`
D. `52.48xx10^(-4)C//m^(2)`
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Correct Answer - A
`sigma=q/(4piR^(2))=(8xx10^(-6))/(4xx3.14xx(5xx10^(-2))^(2))`
`=2.547xx10^(-4)C//m^(2)`
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