Question: It was shown in Example 21.11 (Section 21.5) that the electric field due to an infinite line of charge is perpendicular to the line and

It was shown in Example 21.11 (Section 21.5) that the electric field due to an infinite line of charge is perpendicular to the line and has magnitude E = λ/2πє0r. Consider an imaginary cylinder with radius r = 0.250 m and length I = 0.400 m that has an infinite line of positive charge running along its axis. The charge per unit length on the line is λ = 6.00/µC/m.
(a) What is the electric flux through the cylinder due to this infinite line of charge?
(b) What is the flux through the cylinder if its radius is increased to r = 0.500 m?
(c) What is the flux through the cylinder if its length is increased to I = 0.800 m?

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