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A uniformly charged conducting 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

`40pi epsilon_(-1)`

B

`80pi epsilon_(0)^(-1)`

C

`20pi epsilon_(0)^(-1)`

D

`60pi epsilon_(0)^(-1)`

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