1.

A space charge of density rho is uniformly distributed in an infinitely long cylinder of radius R Then, for any point at distance r from the axis (relative permittivity = 1)

Answer»

the ELECTRIC field is `E=(rhor)/(2 in_0)` for 0 lt R lt R
the electric field is `E=(rhoR^3)/(2in_0r^2)` for rgt R
the electric field is `E=(rhor)/in_0` for 0 lt r lt R
the electric field is `E=(rhoR^2)/(in_0r)` for r gt R

Answer :A


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