A thin straight infinitely long conducting wire having charge density `lambda ` is enclosed by a cylinder surface of radius r and length l, its axis coinciding with the length of the wire. Find the expression for the electric flux through the surface of the cylinder.

Explanation

As shown in a thin straight infinitely long conducting wire having linear charge density `lambda ` is enclosed by a cylinder surface of radius r and length l with its axis coinciding with the length of the wire.
As per Gauss.s law total electric flux through the entire surface of the cylinder
` phi_in =(1)/(in_0) ` (charge enclosed within the cylinder)
` = (1)/(in_0) (lambda l) =(lambda l)/(in_0) `
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