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## A long straight wire has fixed negative charge with a linear charge density of magnitude 3.8 nC/m. The wire is to be enclosed by a coaxial,

Question

A long straight wire has fixed negative charge with a linear charge density of magnitude 3.8 nC/m. The wire is to be enclosed by a coaxial, thin-walled, nonconducting cylindrical shell of radius 1.6 cm. The shell is to have positive charge on its outside surface with a surface charge density σ that makes the net external electric field is zero. Calculate σ.

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Physics
3 years
2021-08-29T18:59:07+00:00
2021-08-29T18:59:07+00:00 1 Answers
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## Answers ( )

Answer:Explanation:1. We need two market for the cylindrical shell and second for the rod.

By Gauss Law for shell, and then eq. becomes , we integrate to find

….

Gauss Law for rod, Where is charge per length and is the rod’s length (). We integrate to find

-solve the two equations to find the value of