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A solid non-conduction cylinder of radiu...

A solid non-conduction cylinder of radius R is charge such that volume charge density is proporation to r where r is distance from axis. The electric field E at a distance `r(r lt R)` well depend on r as.

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`E2pirl=(intalphar.2pil. dr)/(epsi_(0))`
`Ealpha r^(2)`
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