need help with these What is the total electric flux through a Gaussian surface

Question

need help with these

What is the total electric flux through a Gaussian surface that is cylinder shaped with radius R and height h. if a charge q = 4.5 nC is placed at its geometric center. Use Gauss's to show that the electric field due to a charged sphere of radius R has the same functional form as a point charge's electric field for points at a location r > R. The total electric flux through a sphere-shaped Gaussian surface of radius R = 0.15 m Ls 734 N m2/C. How much charge is enclosed in the sphere?

Explanation / Answer

3. netflux = qenc/e0 = 4.5E-9/8.85E-12=508.5

4) r>R so qenc = Q

so E 4 pi r^2 = Q/e0

E = 1/4 pi e0 Q/r^2

5) netflux = qenc/e0

qenc = 8.85E-12*734=6.50E-9 C

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