Physics

Problem

A long cylindrical non-conducting shell has inner radius

a = 2.0\,\text{cm}

and outer radius

b = 5.0\,\text{cm}

. It carries a uniform volume charge density

\rho = 1.6\times10^{-6}\,\text{C m}^{-3}

. What is the magnitude of the electric field at a point situated

r = 3.0\,\text{cm}

from the axis (where

a < r < b

)? a)

3.0\times10^{3}\,\text{N C}^{-1}

1.5\times10^{4}\,\text{N C}^{-1}

6.3\times10^{3}\,\text{N C}^{-1}

3.0\times10^{4}\,\text{N C}^{-1}