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A thin straight infinite long conducting …

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A thin straight infinite long conducting wire having a charge density lemda is close by a cylindrical surface of radius r and length l,its axis conciding with the length of wire find the expression for the electric flux through the surface of the cylinder.
  • 2 answers

Satyam Kumar 4 years, 9 months ago

thanks

Sia ? 6 years, 3 months ago

A thin straight conducting wire will be a uniform linear charge distribution. Let q charge be enclosed by the cylindrical surface.

Gauss' law states that electric flux through any closed surface is equal to the net charge enclosed inside the surface divided by permittivity of vacuum.
Linear charge density,
{tex}\lambda = \frac { q } { l }{/tex}
{tex}q = \lambda l{/tex} ....... (i)
By Gauss' theorem,
{tex}\therefore {/tex} Total electric flux through the surface of cylinder
{tex}\phi = \frac { q } { \varepsilon _ { 0 } }{/tex} [Gauss' theorem]
{tex}\therefore \quad \phi = \frac { \lambda l } { \varepsilon _ { 0 } }{/tex} [From Eq. (i)]

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