If sigma is surface density of charge on...

If `sigma` is surface density of charge on the charged cylinder of radius R, then electric intensity E at outer point at a distance r from its axis is

`(sigmaR)/(in_(0)kr)`

`(sigmar)/(in_(0)kR)`

`(sigma)/(in_(0)k)`

`(sigma^(2)R)/(in_(0)kr)`

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